1 | #include <stdio.h> |
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2 | #include <stdlib.h> |
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3 | #include <string.h> |
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4 | #include <unistd.h> |
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5 | #include "owl.h" |
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6 | |
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7 | extern const owl_cmd commands_to_init[]; |
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8 | |
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9 | /**************************************************************************/ |
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10 | /***************************** COMMAND DICT *******************************/ |
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11 | /**************************************************************************/ |
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12 | |
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13 | int owl_cmddict_setup(owl_cmddict *cd) { |
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14 | if (0 != owl_cmddict_init(cd)) return(-1); |
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15 | if (0 != owl_cmddict_add_from_list(cd, commands_to_init)) return(-1); |
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16 | return(0); |
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17 | } |
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18 | |
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19 | int owl_cmddict_init(owl_cmddict *cd) { |
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20 | if (owl_dict_create(cd)) return(-1); |
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21 | return(0); |
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22 | } |
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23 | |
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24 | /* for bulk initialization at startup */ |
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25 | int owl_cmddict_add_from_list(owl_cmddict *cd, const owl_cmd *cmds) { |
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26 | const owl_cmd *cur; |
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27 | int ret = 0; |
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28 | for (cur = cmds; cur->name != NULL; cur++) { |
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29 | ret = owl_cmddict_add_cmd(cd, cur); |
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30 | if (ret < 0) break; |
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31 | } |
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32 | return ret; |
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33 | } |
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34 | |
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35 | /* free the list with owl_cmddict_namelist_free */ |
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36 | void owl_cmddict_get_names(const owl_cmddict *d, owl_list *l) { |
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37 | owl_dict_get_keys(d, l); |
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38 | } |
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39 | |
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40 | const owl_cmd *owl_cmddict_find(const owl_cmddict *d, const char *name) { |
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41 | return owl_dict_find_element(d, name); |
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42 | } |
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43 | |
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44 | void owl_cmddict_namelist_free(owl_list *l) { |
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45 | owl_list_free_all(l, owl_free); |
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46 | } |
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47 | |
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48 | /* creates a new command alias */ |
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49 | int owl_cmddict_add_alias(owl_cmddict *cd, const char *alias_from, const char *alias_to) { |
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50 | owl_cmd *cmd; |
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51 | cmd = owl_malloc(sizeof(owl_cmd)); |
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52 | owl_cmd_create_alias(cmd, alias_from, alias_to); |
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53 | owl_dict_insert_element(cd, cmd->name, cmd, (void(*)(void*))owl_cmd_free); |
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54 | return(0); |
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55 | } |
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56 | |
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57 | int owl_cmddict_add_cmd(owl_cmddict *cd, const owl_cmd * cmd) { |
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58 | owl_cmd * newcmd = owl_malloc(sizeof(owl_cmd)); |
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59 | if(owl_cmd_create_from_template(newcmd, cmd) < 0) { |
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60 | owl_free(newcmd); |
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61 | return -1; |
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62 | } |
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63 | owl_perlconfig_new_command(cmd->name); |
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64 | return owl_dict_insert_element(cd, newcmd->name, newcmd, (void(*)(void*))owl_cmd_free); |
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65 | } |
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66 | |
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67 | char *_owl_cmddict_execute(const owl_cmddict *cd, const owl_context *ctx, const char *const *argv, int argc, const char *buff) { |
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68 | char *retval = NULL; |
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69 | const owl_cmd *cmd; |
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70 | |
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71 | if (!strcmp(argv[0], "")) { |
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72 | } else if (NULL != (cmd = owl_dict_find_element(cd, argv[0]))) { |
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73 | retval = owl_cmd_execute(cmd, cd, ctx, argc, argv, buff); |
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74 | } else { |
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75 | owl_function_makemsg("Unknown command '%s'.", buff); |
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76 | } |
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77 | return retval; |
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78 | } |
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79 | |
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80 | char *owl_cmddict_execute(const owl_cmddict *cd, const owl_context *ctx, const char *cmdbuff) { |
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81 | char **argv; |
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82 | int argc; |
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83 | char *tmpbuff; |
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84 | char *retval = NULL; |
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85 | |
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86 | tmpbuff=owl_strdup(cmdbuff); |
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87 | argv=owl_parseline(tmpbuff, &argc); |
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88 | if (argc < 0) { |
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89 | owl_free(tmpbuff); |
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90 | sepbar(NULL); |
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91 | owl_function_makemsg("Unbalanced quotes"); |
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92 | return NULL; |
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93 | } |
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94 | |
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95 | if (argc < 1) return(NULL); |
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96 | |
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97 | retval = _owl_cmddict_execute(cd, ctx, strs(argv), argc, cmdbuff); |
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98 | |
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99 | owl_parsefree(argv, argc); |
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100 | owl_free(tmpbuff); |
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101 | sepbar(NULL); |
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102 | return retval; |
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103 | } |
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104 | |
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105 | char *owl_cmddict_execute_argv(const owl_cmddict *cd, const owl_context *ctx, const char *const *argv, int argc) { |
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106 | char *buff, *ptr; |
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107 | int len = 0, i; |
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108 | char *retval = NULL; |
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109 | |
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110 | for(i = 0; i < argc; i++) { |
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111 | len += strlen(argv[i]) + 1; |
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112 | } |
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113 | |
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114 | ptr = buff = owl_malloc(len); |
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115 | |
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116 | for(i = 0; i < argc; i++) { |
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117 | strcpy(ptr, argv[i]); |
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118 | ptr += strlen(argv[i]); |
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119 | *(ptr++) = ' '; |
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120 | } |
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121 | *(ptr - 1) = 0; |
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122 | |
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123 | retval = _owl_cmddict_execute(cd, ctx, argv, argc, buff); |
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124 | |
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125 | owl_free(buff); |
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126 | return retval; |
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127 | } |
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128 | |
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129 | /*********************************************************************/ |
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130 | /***************************** COMMAND *******************************/ |
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131 | /*********************************************************************/ |
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132 | |
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133 | /* sets up a new command based on a template, copying strings */ |
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134 | int owl_cmd_create_from_template(owl_cmd *cmd, const owl_cmd *templ) { |
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135 | *cmd = *templ; |
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136 | if (!templ->name) return(-1); |
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137 | cmd->name = owl_strdup(templ->name); |
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138 | if (templ->summary) cmd->summary = owl_strdup(templ->summary); |
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139 | if (templ->usage) cmd->usage = owl_strdup(templ->usage); |
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140 | if (templ->description) cmd->description = owl_strdup(templ->description); |
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141 | if (templ->cmd_aliased_to) cmd->cmd_aliased_to = owl_strdup(templ->cmd_aliased_to); |
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142 | return(0); |
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143 | } |
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144 | |
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145 | int owl_cmd_create_alias(owl_cmd *cmd, const char *name, const char *aliased_to) { |
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146 | memset(cmd, 0, sizeof(owl_cmd)); |
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147 | cmd->name = owl_strdup(name); |
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148 | cmd->cmd_aliased_to = owl_strdup(aliased_to); |
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149 | cmd->summary = owl_malloc(strlen(aliased_to)+strlen(OWL_CMD_ALIAS_SUMMARY_PREFIX)+2); |
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150 | strcpy(cmd->summary, OWL_CMD_ALIAS_SUMMARY_PREFIX); |
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151 | strcat(cmd->summary, aliased_to); |
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152 | return(0); |
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153 | } |
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154 | |
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155 | void owl_cmd_free(owl_cmd *cmd) { |
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156 | if (cmd->name) owl_free(cmd->name); |
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157 | if (cmd->summary) owl_free(cmd->summary); |
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158 | if (cmd->usage) owl_free(cmd->usage); |
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159 | if (cmd->description) owl_free(cmd->description); |
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160 | if (cmd->cmd_aliased_to) owl_free(cmd->cmd_aliased_to); |
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161 | if (cmd->cmd_perl) owl_perlconfig_cmd_free(cmd); |
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162 | } |
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163 | |
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164 | int owl_cmd_is_context_valid(const owl_cmd *cmd, const owl_context *ctx) { |
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165 | if (owl_context_matches(ctx, cmd->validctx)) return 1; |
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166 | else return 0; |
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167 | } |
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168 | |
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169 | char *owl_cmd_execute(const owl_cmd *cmd, const owl_cmddict *cd, const owl_context *ctx, int argc, const char *const *argv, const char *cmdbuff) { |
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170 | static int alias_recurse_depth = 0; |
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171 | int ival=0; |
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172 | const char *cmdbuffargs; |
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173 | char *newcmd, *rv=NULL; |
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174 | |
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175 | if (argc < 1) return(NULL); |
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176 | |
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177 | /* Recurse if this is an alias */ |
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178 | if (cmd->cmd_aliased_to) { |
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179 | if (alias_recurse_depth++ > 50) { |
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180 | owl_function_makemsg("Alias loop detected for '%s'.", cmdbuff); |
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181 | } else { |
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182 | cmdbuffargs = skiptokens(cmdbuff, 1); |
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183 | newcmd = owl_malloc(strlen(cmd->cmd_aliased_to)+strlen(cmdbuffargs)+2); |
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184 | strcpy(newcmd, cmd->cmd_aliased_to); |
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185 | strcat(newcmd, " "); |
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186 | strcat(newcmd, cmdbuffargs); |
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187 | rv = owl_function_command(newcmd); |
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188 | owl_free(newcmd); |
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189 | } |
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190 | alias_recurse_depth--; |
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191 | return rv; |
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192 | } |
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193 | |
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194 | /* Do validation and conversions */ |
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195 | if (cmd->cmd_ctxargs_fn || cmd->cmd_ctxv_fn || cmd->cmd_ctxi_fn) { |
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196 | if (!owl_cmd_is_context_valid(cmd, ctx)) { |
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197 | owl_function_makemsg("Invalid context for command '%s'.", cmdbuff); |
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198 | return NULL; |
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199 | } |
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200 | } |
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201 | |
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202 | if ((argc != 1) && (cmd->cmd_v_fn || cmd->cmd_ctxv_fn)) { |
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203 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
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204 | return NULL; |
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205 | } |
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206 | |
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207 | if (cmd->cmd_i_fn || cmd->cmd_ctxi_fn) { |
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208 | const char *ep = "x"; |
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209 | if (argc != 2) { |
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210 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
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211 | return NULL; |
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212 | } |
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213 | ival = strtol(argv[1], (char **)&ep, 10); |
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214 | if (*ep || ep==argv[1]) { |
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215 | owl_function_makemsg("Invalid argument '%s' for %s command.", argv[1], argv[0]); |
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216 | return(NULL); |
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217 | } |
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218 | } |
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219 | |
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220 | if (cmd->cmd_args_fn) { |
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221 | return cmd->cmd_args_fn(argc, argv, cmdbuff); |
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222 | } else if (cmd->cmd_v_fn) { |
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223 | cmd->cmd_v_fn(); |
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224 | } else if (cmd->cmd_i_fn) { |
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225 | cmd->cmd_i_fn(ival); |
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226 | } else if (cmd->cmd_ctxargs_fn) { |
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227 | return cmd->cmd_ctxargs_fn(owl_context_get_data(ctx), argc, argv, cmdbuff); |
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228 | } else if (cmd->cmd_ctxv_fn) { |
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229 | cmd->cmd_ctxv_fn(owl_context_get_data(ctx)); |
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230 | } else if (cmd->cmd_ctxi_fn) { |
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231 | cmd->cmd_ctxi_fn(owl_context_get_data(ctx), ival); |
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232 | } else if (cmd->cmd_perl) { |
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233 | return owl_perlconfig_perlcmd(cmd, argc, argv); |
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234 | } |
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235 | |
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236 | return NULL; |
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237 | } |
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238 | |
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239 | /* returns a reference */ |
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240 | const char *owl_cmd_get_summary(const owl_cmd *cmd) { |
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241 | return cmd->summary; |
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242 | } |
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243 | |
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244 | /* returns a summary line describing this keymap. the caller must free. */ |
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245 | char *owl_cmd_describe(const owl_cmd *cmd) { |
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246 | char *s; |
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247 | int slen; |
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248 | if (!cmd || !cmd->name || !cmd->summary) return NULL; |
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249 | slen = strlen(cmd->name)+strlen(cmd->summary)+30; |
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250 | s = owl_malloc(slen); |
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251 | snprintf(s, slen-1, "%-25s - %s", cmd->name, cmd->summary); |
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252 | return s; |
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253 | } |
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254 | |
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255 | |
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256 | |
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257 | void owl_cmd_get_help(const owl_cmddict *d, const char *name, owl_fmtext *fm) { |
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258 | const char *s; |
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259 | char *indent; |
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260 | owl_cmd *cmd; |
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261 | |
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262 | if (!name || (cmd = owl_dict_find_element(d, name)) == NULL) { |
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263 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
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264 | owl_fmtext_append_normal(fm, "No such command...\n"); |
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265 | return; |
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266 | } |
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267 | |
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268 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
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269 | owl_fmtext_append_bold(fm, "NAME\n\n"); |
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270 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
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271 | owl_fmtext_append_normal(fm, cmd->name); |
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272 | |
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273 | if (cmd->summary && *cmd->summary) { |
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274 | owl_fmtext_append_normal(fm, " - "); |
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275 | owl_fmtext_append_normal(fm, cmd->summary); |
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276 | } |
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277 | owl_fmtext_append_normal(fm, "\n"); |
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278 | |
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279 | if (cmd->usage && *cmd->usage) { |
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280 | s = cmd->usage; |
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281 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
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282 | owl_text_indent(indent, s, OWL_TAB); |
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283 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
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284 | owl_fmtext_append_normal(fm, indent); |
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285 | owl_fmtext_append_normal(fm, "\n"); |
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286 | owl_free(indent); |
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287 | } else { |
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288 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
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289 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
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290 | owl_fmtext_append_normal(fm, cmd->name); |
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291 | owl_fmtext_append_normal(fm, "\n"); |
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292 | } |
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293 | |
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294 | if (cmd->description && *cmd->description) { |
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295 | s = cmd->description; |
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296 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
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297 | owl_text_indent(indent, s, OWL_TAB); |
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298 | owl_fmtext_append_bold(fm, "\nDESCRIPTION\n"); |
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299 | owl_fmtext_append_normal(fm, indent); |
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300 | owl_fmtext_append_normal(fm, "\n"); |
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301 | owl_free(indent); |
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302 | } |
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303 | |
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304 | owl_fmtext_append_normal(fm, "\n\n"); |
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305 | } |
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