source: cmd.c @ ce68f23

release-1.8release-1.9
Last change on this file since ce68f23 was ce68f23, checked in by David Benjamin <davidben@mit.edu>, 10 years ago
Make owl_dict_get_keys return a GPtrArray Almost all the remaining uses of owl_list are tightly coupled into this one giant blob.
  • Property mode set to 100644
File size: 8.2 KB
Line 
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <unistd.h>
5#include "owl.h"
6
7/**************************************************************************/
8/***************************** COMMAND DICT *******************************/
9/**************************************************************************/
10
11void owl_cmddict_setup(owl_cmddict *cd)
12{
13  owl_cmddict_init(cd);
14  owl_cmd_add_defaults(cd);
15}
16
17void owl_cmddict_init(owl_cmddict *cd) {
18  owl_dict_create(cd);
19}
20
21/* for bulk initialization at startup */
22void owl_cmddict_add_from_list(owl_cmddict *cd, const owl_cmd *cmds)
23{
24  const owl_cmd *cur;
25  for (cur = cmds; cur->name != NULL; cur++) {
26    owl_cmddict_add_cmd(cd, cur);
27  }
28}
29
30GPtrArray *owl_cmddict_get_names(const owl_cmddict *d) {
31  return owl_dict_get_keys(d);
32}
33
34const owl_cmd *owl_cmddict_find(const owl_cmddict *d, const char *name) {
35  return owl_dict_find_element(d, name);
36}
37
38/* creates a new command alias */
39void owl_cmddict_add_alias(owl_cmddict *cd, const char *alias_from, const char *alias_to) {
40  owl_cmd *cmd;
41  cmd = g_new(owl_cmd, 1);
42  owl_cmd_create_alias(cmd, alias_from, alias_to);
43  owl_perlconfig_new_command(cmd->name);
44  owl_dict_insert_element(cd, cmd->name, cmd, (void (*)(void *))owl_cmd_delete);
45}
46
47int owl_cmddict_add_cmd(owl_cmddict *cd, const owl_cmd * cmd) {
48  owl_cmd * newcmd = g_new(owl_cmd, 1);
49  if(owl_cmd_create_from_template(newcmd, cmd) < 0) {
50    g_free(newcmd);
51    return -1;
52  }
53  owl_perlconfig_new_command(cmd->name);
54  return owl_dict_insert_element(cd, newcmd->name, newcmd, (void (*)(void *))owl_cmd_delete);
55}
56
57/* caller must free the return */
58CALLER_OWN char *_owl_cmddict_execute(const owl_cmddict *cd, const owl_context *ctx, const char *const *argv, int argc, const char *buff)
59{
60  char *retval = NULL;
61  const owl_cmd *cmd;
62
63  if (!strcmp(argv[0], "")) {
64  } else if (NULL != (cmd = owl_dict_find_element(cd, argv[0]))) {
65    retval = owl_cmd_execute(cmd, cd, ctx, argc, argv, buff);
66    /* redraw the sepbar; TODO: don't violate layering */
67    owl_global_sepbar_dirty(&g);
68  } else {
69    owl_function_makemsg("Unknown command '%s'.", buff);
70  }
71  return retval;
72}
73
74/* caller must free the return */
75CALLER_OWN char *owl_cmddict_execute(const owl_cmddict *cd, const owl_context *ctx, const char *cmdbuff)
76{
77  char **argv;
78  int argc;
79  char *retval = NULL;
80
81  argv = owl_parseline(cmdbuff, &argc);
82  if (argv == NULL) {
83    owl_function_makemsg("Unbalanced quotes");
84    return NULL;
85  } 
86 
87  if (argc < 1) {
88    g_strfreev(argv);
89    return NULL;
90  }
91
92  retval = _owl_cmddict_execute(cd, ctx, strs(argv), argc, cmdbuff);
93
94  g_strfreev(argv);
95  return retval;
96}
97
98/* caller must free the return */
99CALLER_OWN char *owl_cmddict_execute_argv(const owl_cmddict *cd, const owl_context *ctx, const char *const *argv, int argc)
100{
101  char *buff;
102  char *retval = NULL;
103
104  buff = g_strjoinv(" ", (char**)argv);
105  retval = _owl_cmddict_execute(cd, ctx, argv, argc, buff);
106  g_free(buff);
107
108  return retval;
109}
110
111/*********************************************************************/
112/***************************** COMMAND *******************************/
113/*********************************************************************/
114
115/* sets up a new command based on a template, copying strings */
116int owl_cmd_create_from_template(owl_cmd *cmd, const owl_cmd *templ) {
117  *cmd = *templ;
118  if (!templ->name) return(-1);
119  cmd->name = g_strdup(templ->name);
120  if (templ->summary)     cmd->summary     = g_strdup(templ->summary);
121  if (templ->usage)       cmd->usage       = g_strdup(templ->usage);
122  if (templ->description) cmd->description = g_strdup(templ->description);
123  if (templ->cmd_aliased_to) cmd->cmd_aliased_to = g_strdup(templ->cmd_aliased_to);
124  return(0);
125}
126
127void owl_cmd_create_alias(owl_cmd *cmd, const char *name, const char *aliased_to) {
128  memset(cmd, 0, sizeof(owl_cmd));
129  cmd->name = g_strdup(name);
130  cmd->cmd_aliased_to = g_strdup(aliased_to);
131  cmd->summary = g_strdup_printf("%s%s", OWL_CMD_ALIAS_SUMMARY_PREFIX, aliased_to);
132}
133
134void owl_cmd_cleanup(owl_cmd *cmd)
135{
136  g_free(cmd->name);
137  g_free(cmd->summary);
138  g_free(cmd->usage);
139  g_free(cmd->description);
140  g_free(cmd->cmd_aliased_to);
141  if (cmd->cmd_perl) owl_perlconfig_cmd_cleanup(cmd);
142}
143
144void owl_cmd_delete(owl_cmd *cmd)
145{
146  owl_cmd_cleanup(cmd);
147  g_free(cmd);
148}
149
150int owl_cmd_is_context_valid(const owl_cmd *cmd, const owl_context *ctx) { 
151  if (owl_context_matches(ctx, cmd->validctx)) return 1;
152  else return 0;
153}
154
155/* caller must free the result */
156CALLER_OWN 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)
157{
158  static int alias_recurse_depth = 0;
159  int ival=0;
160  const char *cmdbuffargs;
161  char *newcmd, *rv=NULL;
162
163  if (argc < 1) return(NULL);
164
165  /* Recurse if this is an alias */
166  if (cmd->cmd_aliased_to) {
167    if (alias_recurse_depth++ > 50) {
168      owl_function_makemsg("Alias loop detected for '%s'.", cmdbuff);
169    } else {
170      cmdbuffargs = skiptokens(cmdbuff, 1);
171      newcmd = g_strdup_printf("%s %s", cmd->cmd_aliased_to, cmdbuffargs);
172      rv = owl_function_command(newcmd);
173      g_free(newcmd);
174    } 
175    alias_recurse_depth--;
176    return rv;
177  }
178
179  /* Do validation and conversions */
180  if (cmd->cmd_ctxargs_fn || cmd->cmd_ctxv_fn || cmd->cmd_ctxi_fn) {
181    if (!owl_cmd_is_context_valid(cmd, ctx)) {
182      owl_function_makemsg("Invalid context for command '%s'.", cmdbuff);
183      return NULL;
184    }
185  }
186
187  if ((argc != 1) && (cmd->cmd_v_fn || cmd->cmd_ctxv_fn)) {
188    owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]);
189    return NULL;
190  }
191
192  if (cmd->cmd_i_fn || cmd->cmd_ctxi_fn) {
193      char *ep;
194      if (argc != 2) {
195        owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]);
196        return NULL;
197      }
198      ival = strtol(argv[1], &ep, 10);
199      if (*ep || ep==argv[1]) {
200        owl_function_makemsg("Invalid argument '%s' for %s command.", argv[1], argv[0]);
201        return(NULL);
202      }
203  }
204
205  if (cmd->cmd_args_fn) {
206    return cmd->cmd_args_fn(argc, argv, cmdbuff);
207  } else if (cmd->cmd_v_fn) {   
208    cmd->cmd_v_fn();
209  } else if (cmd->cmd_i_fn) {
210    cmd->cmd_i_fn(ival);
211  } else if (cmd->cmd_ctxargs_fn) {
212    return cmd->cmd_ctxargs_fn(owl_context_get_data(ctx), argc, argv, cmdbuff);
213  } else if (cmd->cmd_ctxv_fn) {   
214    cmd->cmd_ctxv_fn(owl_context_get_data(ctx));
215  } else if (cmd->cmd_ctxi_fn) {
216    cmd->cmd_ctxi_fn(owl_context_get_data(ctx), ival);
217  } else if (cmd->cmd_perl) {
218    return owl_perlconfig_perlcmd(cmd, argc, argv);
219  }
220
221  return NULL;
222}
223
224/* returns a reference */
225const char *owl_cmd_get_summary(const owl_cmd *cmd) {
226  return cmd->summary;
227}
228
229/* returns a summary line describing this keymap.  the caller must free. */
230CALLER_OWN char *owl_cmd_describe(const owl_cmd *cmd)
231{
232  if (!cmd || !cmd->name || !cmd->summary) return NULL;
233  return g_strdup_printf("%-25s - %s", cmd->name, cmd->summary);
234}
235
236
237
238void owl_cmd_get_help(const owl_cmddict *d, const char *name, owl_fmtext *fm) {
239  const char *s;
240  char *indent;
241  owl_cmd *cmd;
242
243  if (!name || (cmd = owl_dict_find_element(d, name)) == NULL) {
244    owl_fmtext_append_bold(fm, "OWL HELP\n\n");
245    owl_fmtext_append_normal(fm, "No such command...\n");
246    return;
247  }
248
249  owl_fmtext_append_bold(fm, "OWL HELP\n\n");
250  owl_fmtext_append_bold(fm, "NAME\n\n");
251  owl_fmtext_append_normal(fm, OWL_TABSTR);
252  owl_fmtext_append_normal(fm, cmd->name);
253
254  if (cmd->summary && *cmd->summary) {
255    owl_fmtext_append_normal(fm, " - ");
256    owl_fmtext_append_normal(fm, cmd->summary);
257  }
258  owl_fmtext_append_normal(fm, "\n");
259
260  if (cmd->usage && *cmd->usage) {
261    s = cmd->usage;
262    indent = owl_text_indent(s, OWL_TAB);
263    owl_fmtext_append_bold(fm, "\nSYNOPSIS\n");
264    owl_fmtext_append_normal(fm, indent);
265    owl_fmtext_append_normal(fm, "\n");
266    g_free(indent);
267  } else {
268    owl_fmtext_append_bold(fm, "\nSYNOPSIS\n");
269    owl_fmtext_append_normal(fm, OWL_TABSTR);
270    owl_fmtext_append_normal(fm, cmd->name);
271    owl_fmtext_append_normal(fm, "\n");
272  }
273
274  if (cmd->description && *cmd->description) {
275    s = cmd->description;
276    indent = owl_text_indent(s, OWL_TAB);
277    owl_fmtext_append_bold(fm, "\nDESCRIPTION\n");
278    owl_fmtext_append_normal(fm, indent);
279    owl_fmtext_append_normal(fm, "\n");
280    g_free(indent);
281  }
282
283  owl_fmtext_append_normal(fm, "\n\n"); 
284}
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