[7d4fbcd] | 1 | #include <stdio.h> |
---|
| 2 | #include <stdlib.h> |
---|
| 3 | #include <string.h> |
---|
| 4 | #include <unistd.h> |
---|
| 5 | #include "owl.h" |
---|
| 6 | |
---|
| 7 | extern owl_cmd commands_to_init[]; |
---|
| 8 | |
---|
| 9 | /**************************************************************************/ |
---|
| 10 | /***************************** COMMAND DICT *******************************/ |
---|
| 11 | /**************************************************************************/ |
---|
| 12 | |
---|
| 13 | int owl_cmddict_setup(owl_cmddict *cd) { |
---|
| 14 | if (0 != owl_cmddict_init(cd)) return(-1); |
---|
| 15 | if (0 != owl_cmddict_add_from_list(cd, commands_to_init)) return(-1); |
---|
| 16 | return(0); |
---|
| 17 | } |
---|
| 18 | |
---|
| 19 | int owl_cmddict_init(owl_cmddict *cd) { |
---|
| 20 | if (owl_dict_create(cd)) return(-1); |
---|
| 21 | return(0); |
---|
| 22 | } |
---|
| 23 | |
---|
| 24 | /* for bulk initialization at startup */ |
---|
| 25 | int owl_cmddict_add_from_list(owl_cmddict *cd, owl_cmd *cmds) { |
---|
| 26 | owl_cmd *cur, *cmd; |
---|
| 27 | for (cur = cmds; cur->name != NULL; cur++) { |
---|
| 28 | cmd = owl_malloc(sizeof(owl_cmd)); |
---|
| 29 | owl_cmd_create_from_template(cmd, cur); |
---|
| 30 | owl_dict_insert_element(cd, cmd->name, (void*)cmd, NULL); |
---|
| 31 | } |
---|
| 32 | return 0; |
---|
| 33 | } |
---|
| 34 | |
---|
| 35 | /* free the list with owl_cmddict_namelist_free */ |
---|
| 36 | void owl_cmddict_get_names(owl_cmddict *d, owl_list *l) { |
---|
| 37 | owl_dict_get_keys(d, l); |
---|
| 38 | } |
---|
| 39 | |
---|
| 40 | owl_cmd *owl_cmddict_find(owl_cmddict *d, char *name) { |
---|
| 41 | return (owl_cmd*)owl_dict_find_element(d, name); |
---|
| 42 | } |
---|
| 43 | |
---|
| 44 | void owl_cmddict_namelist_free(owl_list *l) { |
---|
| 45 | owl_list_free_all(l, owl_free); |
---|
| 46 | } |
---|
| 47 | |
---|
| 48 | /* creates a new command alias */ |
---|
| 49 | int owl_cmddict_add_alias(owl_cmddict *cd, char *alias_from, char *alias_to) { |
---|
| 50 | owl_cmd *cmd; |
---|
| 51 | cmd = owl_malloc(sizeof(owl_cmd)); |
---|
| 52 | owl_cmd_create_alias(cmd, alias_from, alias_to); |
---|
| 53 | owl_dict_insert_element(cd, cmd->name, (void*)cmd, (void(*)(void*))owl_cmd_free); |
---|
| 54 | return(0); |
---|
| 55 | } |
---|
| 56 | |
---|
| 57 | char *owl_cmddict_execute(owl_cmddict *cd, owl_context *ctx, char *cmdbuff) { |
---|
| 58 | char **argv; |
---|
| 59 | int argc; |
---|
| 60 | char *tmpbuff; |
---|
| 61 | char *retval = NULL; |
---|
| 62 | owl_cmd *cmd; |
---|
| 63 | |
---|
| 64 | tmpbuff=strdup(cmdbuff); |
---|
| 65 | argv=owl_parseline(tmpbuff, &argc); |
---|
| 66 | if (argc < 0) { |
---|
| 67 | owl_free(tmpbuff); |
---|
| 68 | sepbar(NULL); |
---|
| 69 | owl_function_makemsg("Unbalanced quotes"); |
---|
| 70 | return NULL; |
---|
| 71 | } |
---|
| 72 | |
---|
| 73 | if (argc < 1) return(NULL); |
---|
| 74 | |
---|
| 75 | if (!strcmp(argv[0], "")) { |
---|
| 76 | } else if (NULL != (cmd = (owl_cmd*)owl_dict_find_element(cd, argv[0]))) { |
---|
| 77 | retval = owl_cmd_execute(cmd, cd, ctx, argc, argv, cmdbuff); |
---|
| 78 | } else { |
---|
| 79 | owl_function_makemsg("Unknown command '%s'.", cmdbuff); |
---|
| 80 | } |
---|
| 81 | owl_parsefree(argv, argc); |
---|
| 82 | owl_free(tmpbuff); |
---|
| 83 | sepbar(NULL); |
---|
| 84 | return retval; |
---|
| 85 | } |
---|
| 86 | |
---|
| 87 | /*********************************************************************/ |
---|
| 88 | /***************************** COMMAND *******************************/ |
---|
| 89 | /*********************************************************************/ |
---|
| 90 | |
---|
| 91 | /* sets up a new command based on a template, copying strings */ |
---|
| 92 | int owl_cmd_create_from_template(owl_cmd *cmd, owl_cmd *templ) { |
---|
| 93 | *cmd = *templ; |
---|
| 94 | if (!templ->name) return(-1); |
---|
| 95 | cmd->name = owl_strdup(templ->name); |
---|
| 96 | if (cmd->summary) cmd->summary = owl_strdup(templ->summary); |
---|
| 97 | if (cmd->usage) cmd->usage = owl_strdup(templ->usage); |
---|
| 98 | if (cmd->description) cmd->description = owl_strdup(templ->description); |
---|
| 99 | if (cmd->cmd_aliased_to) cmd->cmd_aliased_to = owl_strdup(templ->cmd_aliased_to); |
---|
| 100 | return(0); |
---|
| 101 | } |
---|
| 102 | |
---|
| 103 | int owl_cmd_create_alias(owl_cmd *cmd, char *name, char *aliased_to) { |
---|
| 104 | memset(cmd, 0, sizeof(owl_cmd)); |
---|
| 105 | cmd->name = owl_strdup(name); |
---|
| 106 | cmd->cmd_aliased_to = owl_strdup(aliased_to); |
---|
| 107 | cmd->summary = owl_malloc(strlen(name)+strlen(OWL_CMD_ALIAS_SUMMARY_PREFIX)+2); |
---|
| 108 | strcpy(cmd->summary, OWL_CMD_ALIAS_SUMMARY_PREFIX); |
---|
| 109 | strcat(cmd->summary, name); |
---|
| 110 | return(0); |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | void owl_cmd_free(owl_cmd *cmd) { |
---|
| 114 | if (cmd->name) owl_free(cmd->name); |
---|
| 115 | if (cmd->summary) owl_free(cmd->summary); |
---|
| 116 | if (cmd->usage) owl_free(cmd->usage); |
---|
| 117 | if (cmd->description) owl_free(cmd->description); |
---|
| 118 | } |
---|
| 119 | |
---|
| 120 | int owl_cmd_is_context_valid(owl_cmd *cmd, owl_context *ctx) { |
---|
| 121 | if (owl_context_matches(ctx, cmd->validctx)) return 1; |
---|
| 122 | else return 0; |
---|
| 123 | } |
---|
| 124 | |
---|
| 125 | char *owl_cmd_execute(owl_cmd *cmd, owl_cmddict *cd, owl_context *ctx, int argc, char **argv, char *cmdbuff) { |
---|
| 126 | static int alias_recurse_depth = 0; |
---|
| 127 | int ival=0; |
---|
| 128 | char *cmdbuffargs, *newcmd, *rv=NULL; |
---|
| 129 | |
---|
| 130 | if (argc < 1) return(NULL); |
---|
| 131 | |
---|
| 132 | /* Recurse if this is an alias */ |
---|
| 133 | if (cmd->cmd_aliased_to) { |
---|
| 134 | if (alias_recurse_depth++ > 50) { |
---|
| 135 | owl_function_makemsg("Alias loop detected for '%s'.", cmdbuff); |
---|
| 136 | } else { |
---|
| 137 | cmdbuffargs = skiptokens(cmdbuff, 1); |
---|
| 138 | newcmd = owl_malloc(strlen(cmd->cmd_aliased_to)+strlen(cmdbuffargs)+2); |
---|
| 139 | strcpy(newcmd, cmd->cmd_aliased_to); |
---|
| 140 | strcat(newcmd, " "); |
---|
| 141 | strcat(newcmd, cmdbuffargs); |
---|
| 142 | rv = owl_function_command(newcmd); |
---|
| 143 | owl_free(newcmd); |
---|
| 144 | } |
---|
| 145 | alias_recurse_depth--; |
---|
| 146 | return rv; |
---|
| 147 | } |
---|
| 148 | |
---|
| 149 | /* Do validation and conversions */ |
---|
| 150 | if (cmd->cmd_ctxargs_fn || cmd->cmd_ctxv_fn || cmd->cmd_ctxi_fn) { |
---|
| 151 | if (!owl_cmd_is_context_valid(cmd, ctx)) { |
---|
| 152 | owl_function_makemsg("Invalid context for command '%s'.", cmdbuff); |
---|
| 153 | return NULL; |
---|
| 154 | } |
---|
| 155 | } |
---|
| 156 | |
---|
| 157 | if ((argc != 1) && (cmd->cmd_v_fn || cmd->cmd_ctxv_fn)) { |
---|
| 158 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
---|
| 159 | return NULL; |
---|
| 160 | } |
---|
| 161 | |
---|
| 162 | if (cmd->cmd_i_fn || cmd->cmd_ctxi_fn) { |
---|
| 163 | char *ep = "x"; |
---|
| 164 | if (argc != 2) { |
---|
| 165 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
---|
| 166 | return NULL; |
---|
| 167 | } |
---|
| 168 | ival = strtol(argv[1], &ep, 10); |
---|
| 169 | if (*ep || ep==argv[1]) { |
---|
| 170 | owl_function_makemsg("Invalid argument '%s' for %s command.", argv[1], argv[0]); |
---|
| 171 | return(NULL); |
---|
| 172 | } |
---|
| 173 | } |
---|
| 174 | |
---|
| 175 | if (cmd->cmd_args_fn) { |
---|
| 176 | return cmd->cmd_args_fn(argc, argv, cmdbuff); |
---|
| 177 | } else if (cmd->cmd_v_fn) { |
---|
| 178 | cmd->cmd_v_fn(); |
---|
| 179 | } else if (cmd->cmd_i_fn) { |
---|
| 180 | cmd->cmd_i_fn(ival); |
---|
| 181 | } else if (cmd->cmd_ctxargs_fn) { |
---|
| 182 | return cmd->cmd_ctxargs_fn(owl_context_get_data(ctx), argc, argv, cmdbuff); |
---|
| 183 | } else if (cmd->cmd_ctxv_fn) { |
---|
| 184 | cmd->cmd_ctxv_fn(owl_context_get_data(ctx)); |
---|
| 185 | } else if (cmd->cmd_ctxi_fn) { |
---|
| 186 | cmd->cmd_ctxi_fn(owl_context_get_data(ctx), ival); |
---|
| 187 | } |
---|
| 188 | |
---|
| 189 | return NULL; |
---|
| 190 | } |
---|
| 191 | |
---|
| 192 | /* returns a reference */ |
---|
| 193 | char *owl_cmd_get_summary(owl_cmd *cmd) { |
---|
| 194 | return cmd->summary; |
---|
| 195 | } |
---|
| 196 | |
---|
| 197 | /* returns a summary line describing this keymap. the caller must free. */ |
---|
| 198 | char *owl_cmd_describe(owl_cmd *cmd) { |
---|
| 199 | char *s; |
---|
| 200 | int slen; |
---|
| 201 | if (!cmd || !cmd->name || !cmd->summary) return NULL; |
---|
| 202 | slen = strlen(cmd->name)+strlen(cmd->summary)+30; |
---|
| 203 | s = owl_malloc(slen); |
---|
| 204 | snprintf(s, slen-1, "%-25s - %s", cmd->name, cmd->summary); |
---|
| 205 | return s; |
---|
| 206 | } |
---|
| 207 | |
---|
| 208 | |
---|
| 209 | |
---|
| 210 | void owl_cmd_get_help(owl_cmddict *d, char *name, owl_fmtext *fm) { |
---|
| 211 | char *indent, *s; |
---|
| 212 | owl_cmd *cmd; |
---|
| 213 | |
---|
| 214 | if (!name || (cmd = owl_dict_find_element(d, name)) == NULL) { |
---|
| 215 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
---|
| 216 | owl_fmtext_append_normal(fm, "No such command...\n"); |
---|
| 217 | return; |
---|
| 218 | } |
---|
| 219 | |
---|
| 220 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
---|
| 221 | owl_fmtext_append_bold(fm, "NAME\n\n"); |
---|
| 222 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
---|
| 223 | owl_fmtext_append_normal(fm, cmd->name); |
---|
| 224 | |
---|
| 225 | if (cmd->summary && *cmd->summary) { |
---|
| 226 | owl_fmtext_append_normal(fm, " - "); |
---|
| 227 | owl_fmtext_append_normal(fm, cmd->summary); |
---|
| 228 | } |
---|
| 229 | owl_fmtext_append_normal(fm, "\n"); |
---|
| 230 | |
---|
| 231 | if (cmd->usage && *cmd->usage) { |
---|
| 232 | s = cmd->usage; |
---|
| 233 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
---|
| 234 | owl_text_indent(indent, s, OWL_TAB); |
---|
| 235 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
---|
| 236 | owl_fmtext_append_normal(fm, indent); |
---|
| 237 | owl_fmtext_append_normal(fm, "\n"); |
---|
| 238 | owl_free(indent); |
---|
| 239 | } else { |
---|
| 240 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
---|
| 241 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
---|
| 242 | owl_fmtext_append_normal(fm, cmd->name); |
---|
| 243 | owl_fmtext_append_normal(fm, "\n"); |
---|
| 244 | } |
---|
| 245 | |
---|
| 246 | if (cmd->description && *cmd->description) { |
---|
| 247 | s = cmd->description; |
---|
| 248 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
---|
| 249 | owl_text_indent(indent, s, OWL_TAB); |
---|
| 250 | owl_fmtext_append_bold(fm, "\nDESCRIPTION\n"); |
---|
| 251 | owl_fmtext_append_normal(fm, indent); |
---|
| 252 | owl_fmtext_append_normal(fm, "\n"); |
---|
| 253 | owl_free(indent); |
---|
| 254 | } |
---|
| 255 | |
---|
| 256 | owl_fmtext_append_normal(fm, "\n\n"); |
---|
| 257 | } |
---|