source: cmd.c @ 1aee7d9

barnowl_perlaimdebianowlrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since 1aee7d9 was 1aee7d9, checked in by Erik Nygren <nygren@mit.edu>, 18 years ago
* Added RCS Id strings to all files. * 'show keymaps' shows details of all keymaps after summary list.
  • Property mode set to 100644
File size: 7.7 KB
Line 
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <unistd.h>
5#include "owl.h"
6
7static const char fileIdent[] = "$Id$";
8
9extern owl_cmd commands_to_init[];
10
11/**************************************************************************/
12/***************************** COMMAND DICT *******************************/
13/**************************************************************************/
14
15int owl_cmddict_setup(owl_cmddict *cd) {
16  if (0 != owl_cmddict_init(cd)) return(-1);
17  if (0 != owl_cmddict_add_from_list(cd, commands_to_init)) return(-1);
18  return(0);
19}
20
21int owl_cmddict_init(owl_cmddict *cd) {
22  if (owl_dict_create(cd)) return(-1);
23  return(0);
24}
25
26/* for bulk initialization at startup */
27int owl_cmddict_add_from_list(owl_cmddict *cd, owl_cmd *cmds) {
28  owl_cmd *cur, *cmd;
29  for (cur = cmds; cur->name != NULL; cur++) { 
30    cmd = owl_malloc(sizeof(owl_cmd));
31    owl_cmd_create_from_template(cmd, cur);
32    owl_dict_insert_element(cd, cmd->name, (void*)cmd, NULL);
33  }
34  return 0;
35}
36
37/* free the list with owl_cmddict_namelist_free */
38void owl_cmddict_get_names(owl_cmddict *d, owl_list *l) {
39  owl_dict_get_keys(d, l);
40}
41
42owl_cmd *owl_cmddict_find(owl_cmddict *d, char *name) {
43  return (owl_cmd*)owl_dict_find_element(d, name);
44}
45
46void owl_cmddict_namelist_free(owl_list *l) {
47  owl_list_free_all(l, owl_free);
48}
49
50/* creates a new command alias */
51int owl_cmddict_add_alias(owl_cmddict *cd, char *alias_from, char *alias_to) {
52  owl_cmd *cmd;
53  cmd = owl_malloc(sizeof(owl_cmd));
54  owl_cmd_create_alias(cmd, alias_from, alias_to);
55  owl_dict_insert_element(cd, cmd->name, (void*)cmd, (void(*)(void*))owl_cmd_free);   
56  return(0);
57}
58
59char *owl_cmddict_execute(owl_cmddict *cd, owl_context *ctx, char *cmdbuff) {
60  char **argv;
61  int argc;
62  char *tmpbuff;
63  char *retval = NULL;
64  owl_cmd *cmd;
65
66  tmpbuff=strdup(cmdbuff);
67  argv=owl_parseline(tmpbuff, &argc);
68  if (argc < 0) {
69    owl_free(tmpbuff);
70    sepbar(NULL);
71    owl_function_makemsg("Unbalanced quotes");
72    return NULL;
73  } 
74 
75  if (argc < 1) return(NULL);
76
77  if (!strcmp(argv[0], "")) {
78  } else if (NULL != (cmd = (owl_cmd*)owl_dict_find_element(cd, argv[0]))) {
79    retval = owl_cmd_execute(cmd, cd, ctx, argc, argv, cmdbuff);
80  } else {
81    owl_function_makemsg("Unknown command '%s'.", cmdbuff);
82  }
83  owl_parsefree(argv, argc);
84  owl_free(tmpbuff);
85  sepbar(NULL);
86  return retval;
87}
88
89/*********************************************************************/
90/***************************** COMMAND *******************************/
91/*********************************************************************/
92
93/* sets up a new command based on a template, copying strings */
94int owl_cmd_create_from_template(owl_cmd *cmd, owl_cmd *templ) {
95  *cmd = *templ;
96  if (!templ->name) return(-1);
97  cmd->name = owl_strdup(templ->name);
98  if (cmd->summary)     cmd->summary     = owl_strdup(templ->summary);
99  if (cmd->usage)       cmd->usage       = owl_strdup(templ->usage);
100  if (cmd->description) cmd->description = owl_strdup(templ->description);
101  if (cmd->cmd_aliased_to) cmd->cmd_aliased_to = owl_strdup(templ->cmd_aliased_to);
102  return(0);
103}
104
105int owl_cmd_create_alias(owl_cmd *cmd, char *name, char *aliased_to) {
106  memset(cmd, 0, sizeof(owl_cmd));
107  cmd->name = owl_strdup(name);
108  cmd->cmd_aliased_to = owl_strdup(aliased_to);
109  cmd->summary = owl_malloc(strlen(name)+strlen(OWL_CMD_ALIAS_SUMMARY_PREFIX)+2);
110  strcpy(cmd->summary, OWL_CMD_ALIAS_SUMMARY_PREFIX);
111  strcat(cmd->summary, name);
112  return(0);
113}
114
115void owl_cmd_free(owl_cmd *cmd) {
116  if (cmd->name) owl_free(cmd->name);
117  if (cmd->summary) owl_free(cmd->summary);
118  if (cmd->usage) owl_free(cmd->usage);
119  if (cmd->description) owl_free(cmd->description);
120}
121
122int owl_cmd_is_context_valid(owl_cmd *cmd, owl_context *ctx) { 
123  if (owl_context_matches(ctx, cmd->validctx)) return 1;
124  else return 0;
125}
126
127char *owl_cmd_execute(owl_cmd *cmd, owl_cmddict *cd, owl_context *ctx, int argc, char **argv, char *cmdbuff) {
128  static int alias_recurse_depth = 0;
129  int ival=0;
130  char *cmdbuffargs, *newcmd, *rv=NULL;
131
132  if (argc < 1) return(NULL);
133
134  /* Recurse if this is an alias */
135  if (cmd->cmd_aliased_to) {
136    if (alias_recurse_depth++ > 50) {
137      owl_function_makemsg("Alias loop detected for '%s'.", cmdbuff);
138    } else {
139      cmdbuffargs = skiptokens(cmdbuff, 1);
140      newcmd = owl_malloc(strlen(cmd->cmd_aliased_to)+strlen(cmdbuffargs)+2);
141      strcpy(newcmd, cmd->cmd_aliased_to);
142      strcat(newcmd, " ");
143      strcat(newcmd, cmdbuffargs);
144      rv = owl_function_command(newcmd);
145      owl_free(newcmd);
146    } 
147    alias_recurse_depth--;
148    return rv;
149  }
150
151  /* Do validation and conversions */
152  if (cmd->cmd_ctxargs_fn || cmd->cmd_ctxv_fn || cmd->cmd_ctxi_fn) {
153    if (!owl_cmd_is_context_valid(cmd, ctx)) {
154      owl_function_makemsg("Invalid context for command '%s'.", cmdbuff);
155      return NULL;
156    }
157  }
158
159  if ((argc != 1) && (cmd->cmd_v_fn || cmd->cmd_ctxv_fn)) {
160    owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]);
161    return NULL;
162  }
163
164  if (cmd->cmd_i_fn || cmd->cmd_ctxi_fn) {
165      char *ep = "x";
166      if (argc != 2) {
167        owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]);
168        return NULL;
169      }
170      ival = strtol(argv[1], &ep, 10);
171      if (*ep || ep==argv[1]) {
172        owl_function_makemsg("Invalid argument '%s' for %s command.", argv[1], argv[0]);
173        return(NULL);
174      }
175  }
176
177  if (cmd->cmd_args_fn) {
178    return cmd->cmd_args_fn(argc, argv, cmdbuff);
179  } else if (cmd->cmd_v_fn) {   
180    cmd->cmd_v_fn();
181  } else if (cmd->cmd_i_fn) {
182    cmd->cmd_i_fn(ival);
183  } else if (cmd->cmd_ctxargs_fn) {
184    return cmd->cmd_ctxargs_fn(owl_context_get_data(ctx), argc, argv, cmdbuff);
185  } else if (cmd->cmd_ctxv_fn) {   
186    cmd->cmd_ctxv_fn(owl_context_get_data(ctx));
187  } else if (cmd->cmd_ctxi_fn) {
188    cmd->cmd_ctxi_fn(owl_context_get_data(ctx), ival);
189  }
190
191  return NULL;
192}
193
194/* returns a reference */
195char *owl_cmd_get_summary(owl_cmd *cmd) {
196  return cmd->summary;
197}
198
199/* returns a summary line describing this keymap.  the caller must free. */
200char *owl_cmd_describe(owl_cmd *cmd) {
201  char *s;
202  int slen;
203  if (!cmd || !cmd->name || !cmd->summary) return NULL;
204  slen = strlen(cmd->name)+strlen(cmd->summary)+30;
205  s = owl_malloc(slen);
206  snprintf(s, slen-1, "%-25s - %s", cmd->name, cmd->summary);
207  return s;
208}
209
210
211
212void owl_cmd_get_help(owl_cmddict *d, char *name, owl_fmtext *fm) {
213  char *indent, *s;
214  owl_cmd *cmd;
215
216  if (!name || (cmd = owl_dict_find_element(d, name)) == NULL) {
217    owl_fmtext_append_bold(fm, "OWL HELP\n\n");
218    owl_fmtext_append_normal(fm, "No such command...\n");
219    return;
220  }
221
222  owl_fmtext_append_bold(fm, "OWL HELP\n\n");
223  owl_fmtext_append_bold(fm, "NAME\n\n");
224  owl_fmtext_append_normal(fm, OWL_TABSTR);
225  owl_fmtext_append_normal(fm, cmd->name);
226
227  if (cmd->summary && *cmd->summary) {
228    owl_fmtext_append_normal(fm, " - ");
229    owl_fmtext_append_normal(fm, cmd->summary);
230  }
231  owl_fmtext_append_normal(fm, "\n");
232
233  if (cmd->usage && *cmd->usage) {
234    s = cmd->usage;
235    indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1);
236    owl_text_indent(indent, s, OWL_TAB);
237    owl_fmtext_append_bold(fm, "\nSYNOPSIS\n");
238    owl_fmtext_append_normal(fm, indent);
239    owl_fmtext_append_normal(fm, "\n");
240    owl_free(indent);
241  } else {
242    owl_fmtext_append_bold(fm, "\nSYNOPSIS\n");
243    owl_fmtext_append_normal(fm, OWL_TABSTR);
244    owl_fmtext_append_normal(fm, cmd->name);
245    owl_fmtext_append_normal(fm, "\n");
246  }
247
248  if (cmd->description && *cmd->description) {
249    s = cmd->description;
250    indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1);
251    owl_text_indent(indent, s, OWL_TAB);
252    owl_fmtext_append_bold(fm, "\nDESCRIPTION\n");
253    owl_fmtext_append_normal(fm, indent);
254    owl_fmtext_append_normal(fm, "\n");
255    owl_free(indent);
256  }
257
258  owl_fmtext_append_normal(fm, "\n\n"); 
259}
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