1 | #include <stdio.h> |
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2 | #include <string.h> |
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3 | #include <stdlib.h> |
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4 | #include "owl.h" |
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5 | |
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6 | static const char fileIdent[] = "$Id$"; |
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7 | |
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8 | int owl_text_truncate_lines(char *out, char *in, int aline, int lines) |
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9 | { |
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10 | /* start with line aline (where the first line is 1) and print |
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11 | * 'lines' lines |
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12 | */ |
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13 | char *ptr1, *ptr2; |
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14 | int i; |
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15 | |
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16 | strcpy(out, ""); |
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17 | |
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18 | if (aline==0) aline=1; /* really illegal use */ |
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19 | |
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20 | /* find the starting line */ |
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21 | ptr1=in; |
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22 | if (aline!=1) { |
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23 | for (i=0; i<aline-1; i++) { |
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24 | ptr1=strchr(ptr1, '\n'); |
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25 | if (!ptr1) return(-1); |
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26 | ptr1++; |
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27 | } |
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28 | } |
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29 | /* ptr1 now holds the starting point */ |
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30 | |
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31 | /* copy in the next 'lines' lines */ |
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32 | if (lines<1) return(-1); |
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33 | |
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34 | for (i=0; i<lines; i++) { |
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35 | ptr2=strchr(ptr1, '\n'); |
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36 | if (!ptr2) { |
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37 | strcat(out, ptr1); |
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38 | return(-1); |
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39 | } |
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40 | strncat(out, ptr1, ptr2-ptr1+1); |
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41 | ptr1=ptr2+1; |
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42 | } |
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43 | return(0); |
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44 | } |
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45 | |
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46 | void owl_text_truncate_cols(char *out, char *in, int acol, int bcol) |
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47 | { |
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48 | char *ptr1, *ptr2, *tmpbuff, *last; |
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49 | int len; |
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50 | |
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51 | /* the first column is column 0 */ |
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52 | |
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53 | /* the message is expected to end in a new line for now */ |
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54 | |
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55 | tmpbuff=owl_malloc(strlen(in)+20); |
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56 | |
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57 | strcpy(tmpbuff, ""); |
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58 | last=in+strlen(in)-1; |
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59 | ptr1=in; |
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60 | while (ptr1<last) { |
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61 | ptr2=strchr(ptr1, '\n'); |
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62 | if (!ptr2) { |
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63 | /* but this shouldn't happen if we end in a \n */ |
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64 | break; |
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65 | } |
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66 | |
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67 | if (ptr2==ptr1) { |
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68 | strcat(tmpbuff, "\n"); |
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69 | ptr1++; |
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70 | continue; |
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71 | } |
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72 | |
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73 | /* we need to check that we won't run over here */ |
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74 | if ( (ptr2-ptr1) < (bcol-acol) ) { |
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75 | len=ptr2-(ptr1+acol); |
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76 | } else { |
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77 | len=bcol-acol; |
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78 | } |
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79 | if ((ptr1+len)>=last) { |
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80 | len-=last-(ptr1+len); |
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81 | } |
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82 | |
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83 | strncat(tmpbuff, ptr1+acol, len); |
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84 | strcat(tmpbuff, "\n"); |
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85 | |
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86 | ptr1=ptr2+1; |
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87 | } |
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88 | strcpy(out, tmpbuff); |
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89 | owl_free(tmpbuff); |
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90 | } |
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91 | |
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92 | |
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93 | void owl_text_indent(char *out, char *in, int n) |
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94 | { |
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95 | char *ptr1, *ptr2, *last; |
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96 | int i; |
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97 | |
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98 | strcpy(out, ""); |
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99 | |
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100 | last=in+strlen(in)-1; |
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101 | ptr1=in; |
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102 | while (ptr1<=last) { |
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103 | for (i=0; i<n; i++) { |
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104 | strcat(out, " "); |
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105 | } |
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106 | ptr2=strchr(ptr1, '\n'); |
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107 | if (!ptr2) { |
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108 | strcat(out, ptr1); |
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109 | break; |
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110 | } else { |
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111 | strncat(out, ptr1, ptr2-ptr1+1); |
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112 | } |
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113 | ptr1=ptr2+1; |
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114 | } |
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115 | } |
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116 | |
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117 | |
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118 | int owl_text_num_lines(char *in) |
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119 | { |
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120 | int lines, i; |
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121 | |
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122 | lines=0; |
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123 | for (i=0; in[i]!='\0'; i++) { |
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124 | if (in[i]=='\n') lines++; |
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125 | } |
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126 | |
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127 | /* if the last char wasn't a \n there's one more line */ |
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128 | if (in[i-1]!='\n') lines++; |
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129 | |
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130 | return(lines); |
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131 | } |
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132 | |
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133 | |
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134 | /* caller must free the return */ |
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135 | char *owl_text_htmlstrip(char *in) |
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136 | { |
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137 | char *ptr1, *end, *ptr2, *ptr3, *out, *out2; |
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138 | |
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139 | out=owl_malloc(strlen(in)+30); |
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140 | strcpy(out, ""); |
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141 | |
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142 | ptr1=in; |
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143 | end=in+strlen(in); |
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144 | |
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145 | while(ptr1<end) { |
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146 | /* look for an open bracket */ |
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147 | ptr2=strchr(ptr1, '<'); |
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148 | |
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149 | /* if none, copy in from here to end and exit */ |
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150 | if (ptr2==NULL) { |
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151 | strcat(out, ptr1); |
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152 | break; |
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153 | } |
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154 | |
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155 | /* otherwise copy in everything before the open bracket */ |
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156 | if (ptr2>ptr1) { |
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157 | strncat(out, ptr1, ptr2-ptr1); |
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158 | } |
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159 | |
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160 | /* find the close bracket */ |
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161 | ptr3=strchr(ptr2, '>'); |
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162 | |
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163 | /* if there is no close, copy as you are and exit */ |
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164 | if (!ptr3) { |
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165 | strcat(out, ptr2); |
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166 | break; |
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167 | } |
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168 | |
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169 | /* look for things we know */ |
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170 | if (!strncasecmp(ptr2, "<BODY ", 6) || |
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171 | !strncasecmp(ptr2, "<FONT", 5) || |
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172 | !strncasecmp(ptr2, "<HTML", 5) || |
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173 | !strncasecmp(ptr2, "</FONT", 6) || |
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174 | !strncasecmp(ptr2, "</HTML", 6) || |
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175 | !strncasecmp(ptr2, "</BODY", 6)) { |
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176 | |
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177 | /* advance to beyond the angle brakcet and go again */ |
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178 | ptr1=ptr3+1; |
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179 | continue; |
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180 | } |
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181 | if (!strncasecmp(ptr2, "<BR>", 4)) { |
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182 | strcat(out, "\n"); |
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183 | ptr1=ptr3+1; |
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184 | continue; |
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185 | } |
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186 | |
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187 | /* if it wasn't something we know, copy to the > and go again */ |
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188 | strncat(out, ptr2, ptr3-ptr2+1); |
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189 | ptr1=ptr3+1; |
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190 | } |
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191 | |
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192 | out2=owl_util_substitute(out, "<", "<"); |
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193 | owl_free(out); |
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194 | out=owl_util_substitute(out2, ">", ">"); |
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195 | owl_free(out2); |
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196 | out2=owl_util_substitute(out, "&", "&"); |
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197 | owl_free(out); |
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198 | out=owl_util_substitute(out2, """, "\""); |
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199 | owl_free(out2); |
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200 | out2=owl_util_substitute(out, " ", " "); |
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201 | owl_free(out); |
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202 | out=owl_util_substitute(out2, " ", " "); |
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203 | owl_free(out2); |
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204 | out2=owl_util_substitute(out, " ", " "); |
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205 | owl_free(out); |
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206 | out=owl_util_substitute(out2, "&endash;", "--"); |
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207 | owl_free(out2); |
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208 | out2=owl_util_substitute(out, "&emdash;", "---"); |
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209 | owl_free(out); |
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210 | |
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211 | return(out2); |
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212 | } |
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213 | |
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214 | /* caller must free the return */ |
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215 | char *owl_text_wordwrap(char *in, int col) |
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216 | { |
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217 | char *out; |
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218 | int cur, lastspace, len, lastnewline; |
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219 | |
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220 | out=owl_strdup(in); |
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221 | len=strlen(in); |
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222 | cur=0; |
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223 | lastspace=-1; |
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224 | lastnewline=-1; |
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225 | |
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226 | while (cur<(len-1)) { |
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227 | if (out[cur]==' ') { |
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228 | lastspace=cur; |
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229 | cur++; |
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230 | continue; |
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231 | } else if (out[cur]=='\n') { |
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232 | lastnewline=cur; |
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233 | cur++; |
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234 | continue; |
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235 | } |
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236 | |
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237 | /* do we need to wrap? */ |
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238 | if ( (cur-(lastnewline+1)) > col ) { |
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239 | if (lastspace==-1 || |
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240 | (lastnewline>0 && (lastspace<=lastnewline))) { |
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241 | /* we can't help, sorry */ |
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242 | cur++; |
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243 | continue; |
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244 | } |
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245 | |
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246 | /* turn the last space into a newline */ |
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247 | out[lastspace]='\n'; |
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248 | lastnewline=lastspace; |
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249 | lastspace=-1; |
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250 | cur++; |
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251 | continue; |
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252 | } |
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253 | |
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254 | cur++; |
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255 | continue; |
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256 | } |
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257 | return(out); |
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258 | } |
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