1 | #include "owl.h" |
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2 | #include <stdlib.h> |
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3 | #include <string.h> |
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4 | |
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5 | /* initialize an fmtext with no data */ |
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6 | void owl_fmtext_init_null(owl_fmtext *f) |
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7 | { |
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8 | f->buff = g_string_new(""); |
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9 | } |
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10 | |
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11 | /* Clear the data from an fmtext, but don't deallocate memory. This |
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12 | fmtext can then be appended to again. */ |
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13 | void owl_fmtext_clear(owl_fmtext *f) |
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14 | { |
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15 | g_string_truncate(f->buff, 0); |
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16 | } |
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17 | |
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18 | int owl_fmtext_is_format_char(gunichar c) |
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19 | { |
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20 | if ((c & ~OWL_FMTEXT_UC_ATTR_MASK) == OWL_FMTEXT_UC_ATTR) return 1; |
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21 | if ((c & ~(OWL_FMTEXT_UC_ALLCOLOR_MASK)) == OWL_FMTEXT_UC_COLOR_BASE) return 1; |
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22 | return 0; |
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23 | } |
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24 | /* append text to the end of 'f' with attribute 'attr' and color |
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25 | * 'color' |
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26 | */ |
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27 | void owl_fmtext_append_attr(owl_fmtext *f, const char *text, char attr, short fgcolor, short bgcolor) |
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28 | { |
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29 | int a = 0, fg = 0, bg = 0; |
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30 | |
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31 | if (attr != OWL_FMTEXT_ATTR_NONE) a=1; |
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32 | if (fgcolor != OWL_COLOR_DEFAULT) fg=1; |
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33 | if (bgcolor != OWL_COLOR_DEFAULT) bg=1; |
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34 | |
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35 | /* Set attributes */ |
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36 | if (a) |
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37 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | attr); |
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38 | if (fg) |
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39 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGCOLOR | fgcolor); |
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40 | if (bg) |
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41 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGCOLOR | bgcolor); |
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42 | |
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43 | g_string_append(f->buff, text); |
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44 | |
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45 | /* Reset attributes */ |
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46 | if (bg) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGDEFAULT); |
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47 | if (fg) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGDEFAULT); |
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48 | if (a) g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | OWL_FMTEXT_UC_ATTR); |
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49 | } |
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50 | |
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51 | /* Append normal, uncolored text 'text' to 'f' */ |
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52 | void owl_fmtext_append_normal(owl_fmtext *f, const char *text) |
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53 | { |
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54 | owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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55 | } |
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56 | |
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57 | /* Append normal, uncolored text specified by format string to 'f' */ |
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58 | void owl_fmtext_appendf_normal(owl_fmtext *f, const char *fmt, ...) |
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59 | { |
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60 | va_list ap; |
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61 | char *buff; |
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62 | |
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63 | va_start(ap, fmt); |
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64 | buff = g_strdup_vprintf(fmt, ap); |
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65 | va_end(ap); |
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66 | if (!buff) |
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67 | return; |
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68 | owl_fmtext_append_attr(f, buff, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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69 | g_free(buff); |
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70 | } |
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71 | |
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72 | /* Append normal text 'text' to 'f' with color 'color' */ |
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73 | void owl_fmtext_append_normal_color(owl_fmtext *f, const char *text, int fgcolor, int bgcolor) |
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74 | { |
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75 | owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_NONE, fgcolor, bgcolor); |
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76 | } |
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77 | |
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78 | /* Append bold text 'text' to 'f' */ |
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79 | void owl_fmtext_append_bold(owl_fmtext *f, const char *text) |
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80 | { |
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81 | owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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82 | } |
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83 | |
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84 | /* Append reverse video text 'text' to 'f' */ |
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85 | void owl_fmtext_append_reverse(owl_fmtext *f, const char *text) |
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86 | { |
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87 | owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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88 | } |
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89 | |
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90 | /* Append reversed and bold, uncolored text 'text' to 'f' */ |
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91 | void owl_fmtext_append_reversebold(owl_fmtext *f, const char *text) |
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92 | { |
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93 | owl_fmtext_append_attr(f, text, OWL_FMTEXT_ATTR_REVERSE | OWL_FMTEXT_ATTR_BOLD, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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94 | } |
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95 | |
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96 | /* Internal function. Parse attrbute character. */ |
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97 | static void _owl_fmtext_update_attributes(gunichar c, char *attr, short *fgcolor, short *bgcolor) |
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98 | { |
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99 | if ((c & OWL_FMTEXT_UC_ATTR) == OWL_FMTEXT_UC_ATTR) { |
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100 | *attr = c & OWL_FMTEXT_UC_ATTR_MASK; |
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101 | } |
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102 | else if ((c & OWL_FMTEXT_UC_COLOR_BASE) == OWL_FMTEXT_UC_COLOR_BASE) { |
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103 | if ((c & OWL_FMTEXT_UC_BGCOLOR) == OWL_FMTEXT_UC_BGCOLOR) { |
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104 | *bgcolor = (c == OWL_FMTEXT_UC_BGDEFAULT |
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105 | ? OWL_COLOR_DEFAULT |
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106 | : c & OWL_FMTEXT_UC_COLOR_MASK); |
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107 | } |
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108 | else if ((c & OWL_FMTEXT_UC_FGCOLOR) == OWL_FMTEXT_UC_FGCOLOR) { |
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109 | *fgcolor = (c == OWL_FMTEXT_UC_FGDEFAULT |
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110 | ? OWL_COLOR_DEFAULT |
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111 | : c & OWL_FMTEXT_UC_COLOR_MASK); |
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112 | } |
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113 | } |
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114 | } |
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115 | |
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116 | /* Internal function. Scan for attribute characters. */ |
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117 | static void _owl_fmtext_scan_attributes(const owl_fmtext *f, int start, char *attr, short *fgcolor, short *bgcolor) |
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118 | { |
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119 | const char *p; |
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120 | p = strchr(f->buff->str, OWL_FMTEXT_UC_STARTBYTE_UTF8); |
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121 | while (p && p < f->buff->str + start) { |
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122 | _owl_fmtext_update_attributes(g_utf8_get_char(p), attr, fgcolor, bgcolor); |
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123 | p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8); |
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124 | } |
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125 | } |
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126 | |
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127 | /* Internal function. Append text from 'in' between index 'start' |
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128 | * inclusive and 'stop' exclusive, to the end of 'f'. This function |
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129 | * works with bytes. |
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130 | */ |
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131 | static void _owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in, int start, int stop) |
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132 | { |
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133 | char attr = 0; |
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134 | short fgcolor = OWL_COLOR_DEFAULT; |
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135 | short bgcolor = OWL_COLOR_DEFAULT; |
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136 | |
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137 | _owl_fmtext_scan_attributes(in, start, &attr, &fgcolor, &bgcolor); |
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138 | |
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139 | if (attr != OWL_FMTEXT_ATTR_NONE) |
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140 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | attr); |
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141 | if (fgcolor != OWL_COLOR_DEFAULT) |
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142 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGCOLOR | fgcolor); |
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143 | if (bgcolor != OWL_COLOR_DEFAULT) |
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144 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGCOLOR | bgcolor); |
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145 | |
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146 | g_string_append_len(f->buff, in->buff->str+start, stop-start); |
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147 | |
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148 | /* Reset attributes */ |
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149 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_BGDEFAULT); |
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150 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_FGDEFAULT); |
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151 | g_string_append_unichar(f->buff, OWL_FMTEXT_UC_ATTR | OWL_FMTEXT_UC_ATTR); |
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152 | } |
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153 | |
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154 | /* append fmtext 'in' to 'f' */ |
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155 | void owl_fmtext_append_fmtext(owl_fmtext *f, const owl_fmtext *in) |
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156 | { |
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157 | _owl_fmtext_append_fmtext(f, in, 0, in->buff->len); |
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158 | |
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159 | } |
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160 | |
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161 | /* Append 'nspaces' number of spaces to the end of 'f' */ |
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162 | void owl_fmtext_append_spaces(owl_fmtext *f, int nspaces) |
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163 | { |
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164 | int i; |
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165 | for (i=0; i<nspaces; i++) { |
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166 | owl_fmtext_append_normal(f, " "); |
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167 | } |
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168 | } |
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169 | |
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170 | /* Return a plain version of the fmtext. Caller is responsible for |
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171 | * freeing the return |
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172 | */ |
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173 | char *owl_fmtext_print_plain(const owl_fmtext *f) |
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174 | { |
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175 | return owl_strip_format_chars(f->buff->str); |
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176 | } |
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177 | |
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178 | static void _owl_fmtext_wattrset(WINDOW *w, int attrs) |
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179 | { |
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180 | wattrset(w, A_NORMAL); |
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181 | if (attrs & OWL_FMTEXT_ATTR_BOLD) wattron(w, A_BOLD); |
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182 | if (attrs & OWL_FMTEXT_ATTR_REVERSE) wattron(w, A_REVERSE); |
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183 | if (attrs & OWL_FMTEXT_ATTR_UNDERLINE) wattron(w, A_UNDERLINE); |
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184 | } |
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185 | |
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186 | static void _owl_fmtext_update_colorpair(short fg, short bg, short *pair) |
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187 | { |
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188 | if (owl_global_get_hascolors(&g)) { |
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189 | *pair = owl_fmtext_get_colorpair(fg, bg); |
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190 | } |
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191 | } |
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192 | |
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193 | static void _owl_fmtext_wcolor_set(WINDOW *w, short pair) |
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194 | { |
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195 | if (owl_global_get_hascolors(&g)) { |
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196 | wcolor_set(w,pair,NULL); |
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197 | wbkgdset(w, COLOR_PAIR(pair)); |
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198 | } |
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199 | } |
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200 | |
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201 | /* add the formatted text to the curses window 'w'. The window 'w' |
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202 | * must already be initiatlized with curses |
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203 | */ |
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204 | static void _owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, int do_search, char default_attrs, short default_fgcolor, short default_bgcolor) |
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205 | { |
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206 | /* char *tmpbuff; */ |
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207 | /* int position, trans1, trans2, trans3, len, lastsame; */ |
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208 | char *s, *p; |
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209 | char attr; |
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210 | short fg, bg, pair = 0; |
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211 | |
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212 | if (w==NULL) { |
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213 | owl_function_debugmsg("Hit a null window in owl_fmtext_curs_waddstr."); |
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214 | return; |
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215 | } |
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216 | |
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217 | s = f->buff->str; |
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218 | /* Set default attributes. */ |
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219 | attr = default_attrs; |
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220 | fg = default_fgcolor; |
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221 | bg = default_bgcolor; |
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222 | _owl_fmtext_wattrset(w, attr); |
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223 | _owl_fmtext_update_colorpair(fg, bg, &pair); |
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224 | _owl_fmtext_wcolor_set(w, pair); |
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225 | |
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226 | /* Find next possible format character. */ |
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227 | p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8); |
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228 | while(p) { |
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229 | if (owl_fmtext_is_format_char(g_utf8_get_char(p))) { |
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230 | /* Deal with all text from last insert to here. */ |
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231 | char tmp; |
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232 | |
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233 | tmp = p[0]; |
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234 | p[0] = '\0'; |
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235 | if (do_search && owl_global_is_search_active(&g)) { |
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236 | /* Search is active, so highlight search results. */ |
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237 | int start, end; |
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238 | while (owl_regex_compare(owl_global_get_search_re(&g), s, &start, &end) == 0) { |
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239 | /* Prevent an infinite loop matching the empty string. */ |
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240 | if (end == 0) |
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241 | break; |
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242 | |
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243 | /* Found search string, highlight it. */ |
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244 | |
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245 | waddnstr(w, s, start); |
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246 | |
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247 | _owl_fmtext_wattrset(w, attr ^ OWL_FMTEXT_ATTR_REVERSE); |
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248 | _owl_fmtext_wcolor_set(w, pair); |
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249 | |
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250 | waddnstr(w, s + start, end - start); |
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251 | |
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252 | _owl_fmtext_wattrset(w, attr); |
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253 | _owl_fmtext_wcolor_set(w, pair); |
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254 | |
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255 | s += end; |
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256 | } |
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257 | } |
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258 | /* Deal with remaining part of string. */ |
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259 | waddstr(w, s); |
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260 | p[0] = tmp; |
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261 | |
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262 | /* Deal with new attributes. Process all consecutive formatting |
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263 | * characters, and then apply defaults where relevant. */ |
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264 | while (owl_fmtext_is_format_char(g_utf8_get_char(p))) { |
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265 | _owl_fmtext_update_attributes(g_utf8_get_char(p), &attr, &fg, &bg); |
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266 | p = g_utf8_next_char(p); |
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267 | } |
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268 | attr |= default_attrs; |
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269 | if (fg == OWL_COLOR_DEFAULT) fg = default_fgcolor; |
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270 | if (bg == OWL_COLOR_DEFAULT) bg = default_bgcolor; |
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271 | _owl_fmtext_wattrset(w, attr); |
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272 | _owl_fmtext_update_colorpair(fg, bg, &pair); |
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273 | _owl_fmtext_wcolor_set(w, pair); |
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274 | |
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275 | /* Advance to next non-formatting character. */ |
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276 | s = p; |
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277 | p = strchr(s, OWL_FMTEXT_UC_STARTBYTE_UTF8); |
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278 | } |
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279 | else { |
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280 | p = strchr(p+1, OWL_FMTEXT_UC_STARTBYTE_UTF8); |
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281 | } |
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282 | } |
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283 | if (s) { |
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284 | waddstr(w, s); |
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285 | } |
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286 | wbkgdset(w, 0); |
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287 | } |
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288 | |
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289 | void owl_fmtext_curs_waddstr(const owl_fmtext *f, WINDOW *w, char default_attrs, short default_fgcolor, short default_bgcolor) |
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290 | { |
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291 | _owl_fmtext_curs_waddstr(f, w, 1, default_attrs, default_fgcolor, default_bgcolor); |
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292 | } |
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293 | |
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294 | void owl_fmtext_curs_waddstr_without_search(const owl_fmtext *f, WINDOW *w, char default_attrs, short default_fgcolor, short default_bgcolor) |
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295 | { |
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296 | _owl_fmtext_curs_waddstr(f, w, 0, default_attrs, default_fgcolor, default_bgcolor); |
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297 | } |
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298 | |
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299 | /* Expands tabs. Tabs are expanded as if given an initial indent of start. */ |
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300 | void owl_fmtext_expand_tabs(const owl_fmtext *in, owl_fmtext *out, int start) { |
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301 | int col = start, numcopied = 0; |
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302 | char *ptr; |
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303 | |
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304 | for (ptr = in->buff->str; |
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305 | ptr < in->buff->str + in->buff->len; |
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306 | ptr = g_utf8_next_char(ptr)) { |
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307 | gunichar c = g_utf8_get_char(ptr); |
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308 | int chwidth; |
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309 | if (c == '\t') { |
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310 | /* Copy up to this tab */ |
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311 | _owl_fmtext_append_fmtext(out, in, numcopied, ptr - in->buff->str); |
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312 | /* and then copy spaces for the tab. */ |
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313 | chwidth = OWL_TAB_WIDTH - (col % OWL_TAB_WIDTH); |
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314 | owl_fmtext_append_spaces(out, chwidth); |
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315 | col += chwidth; |
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316 | numcopied = g_utf8_next_char(ptr) - in->buff->str; |
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317 | } else { |
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318 | /* Just update col. We'll append later. */ |
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319 | if (c == '\n') { |
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320 | col = start; |
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321 | } else if (!owl_fmtext_is_format_char(c)) { |
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322 | col += mk_wcwidth(c); |
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323 | } |
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324 | } |
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325 | } |
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326 | /* Append anything we've missed. */ |
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327 | if (numcopied < in->buff->len) |
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328 | _owl_fmtext_append_fmtext(out, in, numcopied, in->buff->len); |
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329 | } |
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330 | |
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331 | /* start with line 'aline' (where the first line is 0) and print |
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332 | * 'lines' number of lines into 'out' |
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333 | */ |
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334 | int owl_fmtext_truncate_lines(const owl_fmtext *in, int aline, int lines, owl_fmtext *out) |
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335 | { |
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336 | const char *ptr1, *ptr2; |
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337 | int i, offset; |
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338 | |
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339 | /* find the starting line */ |
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340 | ptr1 = in->buff->str; |
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341 | for (i = 0; i < aline; i++) { |
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342 | ptr1 = strchr(ptr1, '\n'); |
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343 | if (!ptr1) return(-1); |
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344 | ptr1++; |
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345 | } |
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346 | |
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347 | /* ptr1 now holds the starting point */ |
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348 | |
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349 | /* copy in the next 'lines' lines */ |
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350 | if (lines < 1) return(-1); |
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351 | |
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352 | for (i = 0; i < lines; i++) { |
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353 | offset = ptr1 - in->buff->str; |
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354 | ptr2 = strchr(ptr1, '\n'); |
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355 | if (!ptr2) { |
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356 | /* Copy to the end of the buffer. */ |
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357 | _owl_fmtext_append_fmtext(out, in, offset, in->buff->len); |
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358 | return(-1); |
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359 | } |
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360 | /* Copy up to, and including, the new line. */ |
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361 | _owl_fmtext_append_fmtext(out, in, offset, (ptr2 - ptr1) + offset + 1); |
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362 | ptr1 = ptr2 + 1; |
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363 | } |
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364 | return(0); |
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365 | } |
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366 | |
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367 | /* Implementation of owl_fmtext_truncate_cols. Does not support tabs in input. */ |
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368 | void _owl_fmtext_truncate_cols_internal(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out) |
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369 | { |
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370 | const char *ptr_s, *ptr_e, *ptr_c, *last; |
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371 | int col, st, padding, chwidth; |
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372 | |
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373 | last = in->buff->str + in->buff->len - 1; |
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374 | ptr_s = in->buff->str; |
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375 | while (ptr_s <= last) { |
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376 | ptr_e=strchr(ptr_s, '\n'); |
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377 | if (!ptr_e) { |
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378 | /* but this shouldn't happen if we end in a \n */ |
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379 | break; |
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380 | } |
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381 | |
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382 | if (ptr_e == ptr_s) { |
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383 | owl_fmtext_append_normal(out, "\n"); |
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384 | ++ptr_s; |
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385 | continue; |
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386 | } |
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387 | |
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388 | col = 0; |
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389 | st = 0; |
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390 | padding = 0; |
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391 | chwidth = 0; |
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392 | ptr_c = ptr_s; |
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393 | while(ptr_c < ptr_e) { |
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394 | gunichar c = g_utf8_get_char(ptr_c); |
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395 | if (!owl_fmtext_is_format_char(c)) { |
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396 | chwidth = mk_wcwidth(c); |
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397 | if (col + chwidth > bcol) break; |
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398 | |
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399 | if (col >= acol) { |
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400 | if (st == 0) { |
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401 | ptr_s = ptr_c; |
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402 | padding = col - acol; |
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403 | ++st; |
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404 | } |
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405 | } |
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406 | col += chwidth; |
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407 | chwidth = 0; |
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408 | } |
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409 | ptr_c = g_utf8_next_char(ptr_c); |
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410 | } |
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411 | if (st) { |
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412 | /* lead padding */ |
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413 | owl_fmtext_append_spaces(out, padding); |
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414 | if (ptr_c == ptr_e) { |
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415 | /* We made it to the newline. Append up to, and including it. */ |
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416 | _owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str + 1); |
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417 | } |
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418 | else if (chwidth > 1) { |
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419 | /* Last char is wide, truncate. */ |
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420 | _owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str); |
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421 | owl_fmtext_append_normal(out, "\n"); |
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422 | } |
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423 | else { |
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424 | /* Last char fits perfectly, We stop at the next char to make |
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425 | * sure we get it all. */ |
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426 | ptr_c = g_utf8_next_char(ptr_c); |
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427 | _owl_fmtext_append_fmtext(out, in, ptr_s - in->buff->str, ptr_c - in->buff->str); |
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428 | } |
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429 | } |
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430 | else { |
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431 | owl_fmtext_append_normal(out, "\n"); |
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432 | } |
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433 | ptr_s = g_utf8_next_char(ptr_e); |
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434 | } |
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435 | } |
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436 | |
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437 | /* Truncate the message so that each line begins at column 'acol' and |
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438 | * ends at 'bcol' or sooner. The first column is number 0. The new |
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439 | * message is placed in 'out'. The message is expected to end in a |
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440 | * new line for now. |
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441 | * |
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442 | * NOTE: This needs to be modified to deal with backing up if we find |
---|
443 | * a SPACING COMBINING MARK at the end of a line. If that happens, we |
---|
444 | * should back up to the last non-mark character and stop there. |
---|
445 | * |
---|
446 | * NOTE: If a line ends at bcol, we omit the newline. This is so printing |
---|
447 | * to ncurses works. |
---|
448 | */ |
---|
449 | void owl_fmtext_truncate_cols(const owl_fmtext *in, int acol, int bcol, owl_fmtext *out) |
---|
450 | { |
---|
451 | owl_fmtext notabs; |
---|
452 | |
---|
453 | /* _owl_fmtext_truncate_cols_internal cannot handle tabs. */ |
---|
454 | if (strchr(in->buff->str, '\t')) { |
---|
455 | owl_fmtext_init_null(¬abs); |
---|
456 | owl_fmtext_expand_tabs(in, ¬abs, 0); |
---|
457 | _owl_fmtext_truncate_cols_internal(¬abs, acol, bcol, out); |
---|
458 | owl_fmtext_cleanup(¬abs); |
---|
459 | } else { |
---|
460 | _owl_fmtext_truncate_cols_internal(in, acol, bcol, out); |
---|
461 | } |
---|
462 | } |
---|
463 | |
---|
464 | /* Return the number of lines in 'f' */ |
---|
465 | int owl_fmtext_num_lines(const owl_fmtext *f) |
---|
466 | { |
---|
467 | int lines, i; |
---|
468 | char *lastbreak, *p; |
---|
469 | |
---|
470 | lines=0; |
---|
471 | lastbreak = f->buff->str; |
---|
472 | for (i = 0; i < f->buff->len; i++) { |
---|
473 | if (f->buff->str[i]=='\n') { |
---|
474 | lastbreak = f->buff->str + i; |
---|
475 | lines++; |
---|
476 | } |
---|
477 | } |
---|
478 | |
---|
479 | /* Check if there's a trailing line; formatting characters don't count. */ |
---|
480 | for (p = g_utf8_next_char(lastbreak); |
---|
481 | p < f->buff->str + f->buff->len; |
---|
482 | p = g_utf8_next_char(p)) { |
---|
483 | if (!owl_fmtext_is_format_char(g_utf8_get_char(p))) { |
---|
484 | lines++; |
---|
485 | break; |
---|
486 | } |
---|
487 | } |
---|
488 | |
---|
489 | return(lines); |
---|
490 | } |
---|
491 | |
---|
492 | /* Returns the line number, starting at 0, of the character which |
---|
493 | * contains the byte at 'offset'. Note that a trailing newline is part |
---|
494 | * of the line it ends. Also, while a trailing line of formatting |
---|
495 | * characters does not contribute to owl_fmtext_num_lines, those |
---|
496 | * characters are considered on a new line. */ |
---|
497 | int owl_fmtext_line_number(const owl_fmtext *f, int offset) |
---|
498 | { |
---|
499 | int i, lineno = 0; |
---|
500 | if (offset >= f->buff->len) |
---|
501 | offset = f->buff->len - 1; |
---|
502 | for (i = 0; i < offset; i++) { |
---|
503 | if (f->buff->str[i] == '\n') |
---|
504 | lineno++; |
---|
505 | } |
---|
506 | return lineno; |
---|
507 | } |
---|
508 | |
---|
509 | /* Searches for line 'lineno' in 'f'. The returned range, [start, |
---|
510 | * end), forms a half-open interval for the extent of the line. */ |
---|
511 | void owl_fmtext_line_extents(const owl_fmtext *f, int lineno, int *o_start, int *o_end) |
---|
512 | { |
---|
513 | int start, end; |
---|
514 | char *newline; |
---|
515 | for (start = 0; lineno > 0 && start < f->buff->len; start++) { |
---|
516 | if (f->buff->str[start] == '\n') |
---|
517 | lineno--; |
---|
518 | } |
---|
519 | newline = strchr(f->buff->str + start, '\n'); |
---|
520 | /* Include the newline, if it is there. */ |
---|
521 | end = newline ? newline - f->buff->str + 1 : f->buff->len; |
---|
522 | if (o_start) *o_start = start; |
---|
523 | if (o_end) *o_end = end; |
---|
524 | } |
---|
525 | |
---|
526 | const char *owl_fmtext_get_text(const owl_fmtext *f) |
---|
527 | { |
---|
528 | return f->buff->str; |
---|
529 | } |
---|
530 | |
---|
531 | int owl_fmtext_num_bytes(const owl_fmtext *f) |
---|
532 | { |
---|
533 | return f->buff->len; |
---|
534 | } |
---|
535 | |
---|
536 | /* Make a copy of the fmtext 'src' into 'dst' */ |
---|
537 | void owl_fmtext_copy(owl_fmtext *dst, const owl_fmtext *src) |
---|
538 | { |
---|
539 | dst->buff = g_string_new(src->buff->str); |
---|
540 | } |
---|
541 | |
---|
542 | /* Search 'f' for the regex 're' for matches starting at |
---|
543 | * 'start'. Returns the offset of the first match, -1 if not |
---|
544 | * found. This is a case-insensitive search. |
---|
545 | */ |
---|
546 | int owl_fmtext_search(const owl_fmtext *f, const owl_regex *re, int start) |
---|
547 | { |
---|
548 | int offset; |
---|
549 | if (start > f->buff->len || |
---|
550 | owl_regex_compare(re, f->buff->str + start, &offset, NULL) != 0) |
---|
551 | return -1; |
---|
552 | return offset + start; |
---|
553 | } |
---|
554 | |
---|
555 | |
---|
556 | /* Append the text 'text' to 'f' and interpret the zephyr style |
---|
557 | * formatting syntax to set appropriate attributes. |
---|
558 | */ |
---|
559 | void owl_fmtext_append_ztext(owl_fmtext *f, const char *text) |
---|
560 | { |
---|
561 | int stacksize, curattrs, curcolor; |
---|
562 | const char *ptr, *txtptr, *tmpptr; |
---|
563 | char *buff; |
---|
564 | int attrstack[32], chrstack[32], colorstack[32]; |
---|
565 | |
---|
566 | curattrs=OWL_FMTEXT_ATTR_NONE; |
---|
567 | curcolor=OWL_COLOR_DEFAULT; |
---|
568 | stacksize=0; |
---|
569 | txtptr=text; |
---|
570 | while (1) { |
---|
571 | ptr=strpbrk(txtptr, "@{[<()>]}"); |
---|
572 | if (!ptr) { |
---|
573 | /* add all the rest of the text and exit */ |
---|
574 | owl_fmtext_append_attr(f, txtptr, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
575 | return; |
---|
576 | } else if (ptr[0]=='@') { |
---|
577 | /* add the text up to this point then deal with the stack */ |
---|
578 | buff=g_new(char, ptr-txtptr+20); |
---|
579 | strncpy(buff, txtptr, ptr-txtptr); |
---|
580 | buff[ptr-txtptr]='\0'; |
---|
581 | owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
582 | g_free(buff); |
---|
583 | |
---|
584 | /* update pointer to point at the @ */ |
---|
585 | txtptr=ptr; |
---|
586 | |
---|
587 | /* now the stack */ |
---|
588 | |
---|
589 | /* if we've hit our max stack depth, print the @ and move on */ |
---|
590 | if (stacksize==32) { |
---|
591 | owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
592 | txtptr++; |
---|
593 | continue; |
---|
594 | } |
---|
595 | |
---|
596 | /* if it's an @@, print an @ and continue */ |
---|
597 | if (txtptr[1]=='@') { |
---|
598 | owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
599 | txtptr+=2; |
---|
600 | continue; |
---|
601 | } |
---|
602 | |
---|
603 | /* if there's no opener, print the @ and continue */ |
---|
604 | tmpptr=strpbrk(txtptr, "(<[{ "); |
---|
605 | if (!tmpptr || tmpptr[0]==' ') { |
---|
606 | owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
607 | txtptr++; |
---|
608 | continue; |
---|
609 | } |
---|
610 | |
---|
611 | /* check what command we've got, push it on the stack, start |
---|
612 | using it, and continue ... unless it's a color command */ |
---|
613 | buff=g_new(char, tmpptr-ptr+20); |
---|
614 | strncpy(buff, ptr, tmpptr-ptr); |
---|
615 | buff[tmpptr-ptr]='\0'; |
---|
616 | if (!strcasecmp(buff, "@bold")) { |
---|
617 | attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD; |
---|
618 | chrstack[stacksize]=tmpptr[0]; |
---|
619 | colorstack[stacksize]=curcolor; |
---|
620 | stacksize++; |
---|
621 | curattrs|=OWL_FMTEXT_ATTR_BOLD; |
---|
622 | txtptr+=6; |
---|
623 | g_free(buff); |
---|
624 | continue; |
---|
625 | } else if (!strcasecmp(buff, "@b")) { |
---|
626 | attrstack[stacksize]=OWL_FMTEXT_ATTR_BOLD; |
---|
627 | chrstack[stacksize]=tmpptr[0]; |
---|
628 | colorstack[stacksize]=curcolor; |
---|
629 | stacksize++; |
---|
630 | curattrs|=OWL_FMTEXT_ATTR_BOLD; |
---|
631 | txtptr+=3; |
---|
632 | g_free(buff); |
---|
633 | continue; |
---|
634 | } else if (!strcasecmp(buff, "@i")) { |
---|
635 | attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE; |
---|
636 | chrstack[stacksize]=tmpptr[0]; |
---|
637 | colorstack[stacksize]=curcolor; |
---|
638 | stacksize++; |
---|
639 | curattrs|=OWL_FMTEXT_ATTR_UNDERLINE; |
---|
640 | txtptr+=3; |
---|
641 | g_free(buff); |
---|
642 | continue; |
---|
643 | } else if (!strcasecmp(buff, "@italic")) { |
---|
644 | attrstack[stacksize]=OWL_FMTEXT_ATTR_UNDERLINE; |
---|
645 | chrstack[stacksize]=tmpptr[0]; |
---|
646 | colorstack[stacksize]=curcolor; |
---|
647 | stacksize++; |
---|
648 | curattrs|=OWL_FMTEXT_ATTR_UNDERLINE; |
---|
649 | txtptr+=8; |
---|
650 | g_free(buff); |
---|
651 | continue; |
---|
652 | } else if (!strcasecmp(buff, "@")) { |
---|
653 | attrstack[stacksize]=OWL_FMTEXT_ATTR_NONE; |
---|
654 | chrstack[stacksize]=tmpptr[0]; |
---|
655 | colorstack[stacksize]=curcolor; |
---|
656 | stacksize++; |
---|
657 | txtptr+=2; |
---|
658 | g_free(buff); |
---|
659 | continue; |
---|
660 | |
---|
661 | /* if it's a color read the color, set the current color and |
---|
662 | continue */ |
---|
663 | } else if (!strcasecmp(buff, "@color") |
---|
664 | && owl_global_get_hascolors(&g) |
---|
665 | && owl_global_is_colorztext(&g)) { |
---|
666 | g_free(buff); |
---|
667 | txtptr+=7; |
---|
668 | tmpptr=strpbrk(txtptr, "@{[<()>]}"); |
---|
669 | if (tmpptr && |
---|
670 | ((txtptr[-1]=='(' && tmpptr[0]==')') || |
---|
671 | (txtptr[-1]=='<' && tmpptr[0]=='>') || |
---|
672 | (txtptr[-1]=='[' && tmpptr[0]==']') || |
---|
673 | (txtptr[-1]=='{' && tmpptr[0]=='}'))) { |
---|
674 | |
---|
675 | /* grab the color name */ |
---|
676 | buff=g_new(char, tmpptr-txtptr+20); |
---|
677 | strncpy(buff, txtptr, tmpptr-txtptr); |
---|
678 | buff[tmpptr-txtptr]='\0'; |
---|
679 | |
---|
680 | /* set it as the current color */ |
---|
681 | curcolor=owl_util_string_to_color(buff); |
---|
682 | if (curcolor == OWL_COLOR_INVALID) |
---|
683 | curcolor = OWL_COLOR_DEFAULT; |
---|
684 | g_free(buff); |
---|
685 | txtptr=tmpptr+1; |
---|
686 | continue; |
---|
687 | |
---|
688 | } else { |
---|
689 | |
---|
690 | } |
---|
691 | |
---|
692 | } else { |
---|
693 | /* if we didn't understand it, we'll print it. This is different from zwgc |
---|
694 | * but zwgc seems to be smarter about some screw cases than I am |
---|
695 | */ |
---|
696 | owl_fmtext_append_attr(f, "@", curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
697 | txtptr++; |
---|
698 | continue; |
---|
699 | } |
---|
700 | |
---|
701 | } else if (ptr[0]=='}' || ptr[0]==']' || ptr[0]==')' || ptr[0]=='>') { |
---|
702 | /* add the text up to this point first */ |
---|
703 | buff=g_new(char, ptr-txtptr+20); |
---|
704 | strncpy(buff, txtptr, ptr-txtptr); |
---|
705 | buff[ptr-txtptr]='\0'; |
---|
706 | owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
707 | g_free(buff); |
---|
708 | |
---|
709 | /* now deal with the closer */ |
---|
710 | txtptr=ptr; |
---|
711 | |
---|
712 | /* first, if the stack is empty we must bail (just print and go) */ |
---|
713 | if (stacksize==0) { |
---|
714 | buff=g_new(char, 5); |
---|
715 | buff[0]=ptr[0]; |
---|
716 | buff[1]='\0'; |
---|
717 | owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
718 | g_free(buff); |
---|
719 | txtptr++; |
---|
720 | continue; |
---|
721 | } |
---|
722 | |
---|
723 | /* if the closing char is what's on the stack, turn off the |
---|
724 | attribue and pop the stack */ |
---|
725 | if ((ptr[0]==')' && chrstack[stacksize-1]=='(') || |
---|
726 | (ptr[0]=='>' && chrstack[stacksize-1]=='<') || |
---|
727 | (ptr[0]==']' && chrstack[stacksize-1]=='[') || |
---|
728 | (ptr[0]=='}' && chrstack[stacksize-1]=='{')) { |
---|
729 | int i; |
---|
730 | stacksize--; |
---|
731 | curattrs=OWL_FMTEXT_ATTR_NONE; |
---|
732 | curcolor = colorstack[stacksize]; |
---|
733 | for (i=0; i<stacksize; i++) { |
---|
734 | curattrs|=attrstack[i]; |
---|
735 | } |
---|
736 | txtptr+=1; |
---|
737 | continue; |
---|
738 | } else { |
---|
739 | /* otherwise print and continue */ |
---|
740 | buff=g_new(char, 5); |
---|
741 | buff[0]=ptr[0]; |
---|
742 | buff[1]='\0'; |
---|
743 | owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
744 | g_free(buff); |
---|
745 | txtptr++; |
---|
746 | continue; |
---|
747 | } |
---|
748 | } else { |
---|
749 | /* we've found an unattached opener, print everything and move on */ |
---|
750 | buff=g_new(char, ptr-txtptr+20); |
---|
751 | strncpy(buff, txtptr, ptr-txtptr+1); |
---|
752 | buff[ptr-txtptr+1]='\0'; |
---|
753 | owl_fmtext_append_attr(f, buff, curattrs, curcolor, OWL_COLOR_DEFAULT); |
---|
754 | g_free(buff); |
---|
755 | txtptr=ptr+1; |
---|
756 | continue; |
---|
757 | } |
---|
758 | } |
---|
759 | } |
---|
760 | |
---|
761 | /* requires that the list values are strings or NULL. |
---|
762 | * joins the elements together with join_with. |
---|
763 | * If format_fn is specified, passes it the list element value |
---|
764 | * and it will return a string which this needs to free. */ |
---|
765 | void owl_fmtext_append_list(owl_fmtext *f, const owl_list *l, const char *join_with, char *(format_fn)(const char *)) |
---|
766 | { |
---|
767 | int i, size; |
---|
768 | const char *elem; |
---|
769 | char *text; |
---|
770 | |
---|
771 | size = owl_list_get_size(l); |
---|
772 | for (i=0; i<size; i++) { |
---|
773 | elem = owl_list_get_element(l,i); |
---|
774 | if (elem && format_fn) { |
---|
775 | text = format_fn(elem); |
---|
776 | if (text) { |
---|
777 | owl_fmtext_append_normal(f, text); |
---|
778 | g_free(text); |
---|
779 | } |
---|
780 | } else if (elem) { |
---|
781 | owl_fmtext_append_normal(f, elem); |
---|
782 | } |
---|
783 | if ((i < size-1) && join_with) { |
---|
784 | owl_fmtext_append_normal(f, join_with); |
---|
785 | } |
---|
786 | } |
---|
787 | } |
---|
788 | |
---|
789 | /* Free all memory allocated by the object */ |
---|
790 | void owl_fmtext_cleanup(owl_fmtext *f) |
---|
791 | { |
---|
792 | if (f->buff) g_string_free(f->buff, true); |
---|
793 | f->buff = NULL; |
---|
794 | } |
---|
795 | |
---|
796 | /*** Color Pair manager ***/ |
---|
797 | void owl_fmtext_init_colorpair_mgr(owl_colorpair_mgr *cpmgr) |
---|
798 | { |
---|
799 | /* This could be a bitarray if we wanted to save memory. */ |
---|
800 | short i; |
---|
801 | /* The test is <= because we allocate COLORS+1 entries. */ |
---|
802 | cpmgr->pairs = g_new(short *, COLORS + 1); |
---|
803 | for(i = 0; i <= COLORS; i++) { |
---|
804 | cpmgr->pairs[i] = g_new(short, COLORS + 1); |
---|
805 | } |
---|
806 | owl_fmtext_reset_colorpairs(cpmgr); |
---|
807 | } |
---|
808 | |
---|
809 | /* Reset used list */ |
---|
810 | void owl_fmtext_reset_colorpairs(owl_colorpair_mgr *cpmgr) |
---|
811 | { |
---|
812 | short i, j; |
---|
813 | |
---|
814 | cpmgr->overflow = false; |
---|
815 | cpmgr->next = 8; |
---|
816 | /* The test is <= because we allocated COLORS+1 entries. */ |
---|
817 | for(i = 0; i <= COLORS; i++) { |
---|
818 | for(j = 0; j <= COLORS; j++) { |
---|
819 | cpmgr->pairs[i][j] = -1; |
---|
820 | } |
---|
821 | } |
---|
822 | if (owl_global_get_hascolors(&g)) { |
---|
823 | for(i = 0; i < 8; i++) { |
---|
824 | short fg, bg; |
---|
825 | if (i >= COLORS) continue; |
---|
826 | pair_content(i, &fg, &bg); |
---|
827 | cpmgr->pairs[fg+1][bg+1] = i; |
---|
828 | } |
---|
829 | } |
---|
830 | } |
---|
831 | |
---|
832 | /* Assign pairs by request */ |
---|
833 | short owl_fmtext_get_colorpair(int fg, int bg) |
---|
834 | { |
---|
835 | owl_colorpair_mgr *cpmgr; |
---|
836 | short pair; |
---|
837 | |
---|
838 | /* Sanity (Bounds) Check */ |
---|
839 | if (fg > COLORS || fg < OWL_COLOR_DEFAULT) fg = OWL_COLOR_DEFAULT; |
---|
840 | if (bg > COLORS || bg < OWL_COLOR_DEFAULT) bg = OWL_COLOR_DEFAULT; |
---|
841 | |
---|
842 | #ifdef HAVE_USE_DEFAULT_COLORS |
---|
843 | if (fg == OWL_COLOR_DEFAULT) fg = -1; |
---|
844 | #else |
---|
845 | if (fg == OWL_COLOR_DEFAULT) fg = 0; |
---|
846 | if (bg == OWL_COLOR_DEFAULT) bg = 0; |
---|
847 | #endif |
---|
848 | |
---|
849 | /* looking for a pair we already set up for this draw. */ |
---|
850 | cpmgr = owl_global_get_colorpair_mgr(&g); |
---|
851 | pair = cpmgr->pairs[fg+1][bg+1]; |
---|
852 | if (!(pair != -1 && pair < cpmgr->next)) { |
---|
853 | /* If we didn't find a pair, search for a free one to assign. */ |
---|
854 | pair = (cpmgr->next < COLOR_PAIRS) ? cpmgr->next : -1; |
---|
855 | if (pair != -1) { |
---|
856 | /* We found a free pair, initialize it. */ |
---|
857 | init_pair(pair, fg, bg); |
---|
858 | cpmgr->pairs[fg+1][bg+1] = pair; |
---|
859 | cpmgr->next++; |
---|
860 | } |
---|
861 | else if (bg != OWL_COLOR_DEFAULT) { |
---|
862 | /* We still don't have a pair, drop the background color. Too bad. */ |
---|
863 | owl_function_debugmsg("colorpairs: color shortage - dropping background color."); |
---|
864 | cpmgr->overflow = true; |
---|
865 | pair = owl_fmtext_get_colorpair(fg, OWL_COLOR_DEFAULT); |
---|
866 | } |
---|
867 | else { |
---|
868 | /* We still don't have a pair, defaults all around. */ |
---|
869 | owl_function_debugmsg("colorpairs: color shortage - dropping foreground and background color."); |
---|
870 | cpmgr->overflow = true; |
---|
871 | pair = 0; |
---|
872 | } |
---|
873 | } |
---|
874 | return pair; |
---|
875 | } |
---|