[7d4fbcd] | 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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[1aee7d9] | 7 | static const char fileIdent[] = "$Id$"; |
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| 8 | |
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[7d4fbcd] | 9 | extern owl_cmd commands_to_init[]; |
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| 10 | |
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| 11 | /**************************************************************************/ |
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| 12 | /***************************** COMMAND DICT *******************************/ |
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| 13 | /**************************************************************************/ |
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| 14 | |
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| 15 | int owl_cmddict_setup(owl_cmddict *cd) { |
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| 16 | if (0 != owl_cmddict_init(cd)) return(-1); |
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| 17 | if (0 != owl_cmddict_add_from_list(cd, commands_to_init)) return(-1); |
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| 18 | return(0); |
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| 19 | } |
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| 20 | |
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| 21 | int owl_cmddict_init(owl_cmddict *cd) { |
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| 22 | if (owl_dict_create(cd)) return(-1); |
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| 23 | return(0); |
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| 24 | } |
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| 25 | |
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| 26 | /* for bulk initialization at startup */ |
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| 27 | int owl_cmddict_add_from_list(owl_cmddict *cd, owl_cmd *cmds) { |
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| 28 | owl_cmd *cur, *cmd; |
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| 29 | for (cur = cmds; cur->name != NULL; cur++) { |
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| 30 | cmd = owl_malloc(sizeof(owl_cmd)); |
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| 31 | owl_cmd_create_from_template(cmd, cur); |
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| 32 | owl_dict_insert_element(cd, cmd->name, (void*)cmd, NULL); |
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| 33 | } |
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| 34 | return 0; |
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| 35 | } |
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| 36 | |
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| 37 | /* free the list with owl_cmddict_namelist_free */ |
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| 38 | void owl_cmddict_get_names(owl_cmddict *d, owl_list *l) { |
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| 39 | owl_dict_get_keys(d, l); |
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| 40 | } |
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| 41 | |
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| 42 | owl_cmd *owl_cmddict_find(owl_cmddict *d, char *name) { |
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| 43 | return (owl_cmd*)owl_dict_find_element(d, name); |
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| 44 | } |
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| 45 | |
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| 46 | void owl_cmddict_namelist_free(owl_list *l) { |
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| 47 | owl_list_free_all(l, owl_free); |
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| 48 | } |
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| 49 | |
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| 50 | /* creates a new command alias */ |
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| 51 | int owl_cmddict_add_alias(owl_cmddict *cd, char *alias_from, char *alias_to) { |
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| 52 | owl_cmd *cmd; |
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| 53 | cmd = owl_malloc(sizeof(owl_cmd)); |
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| 54 | owl_cmd_create_alias(cmd, alias_from, alias_to); |
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| 55 | owl_dict_insert_element(cd, cmd->name, (void*)cmd, (void(*)(void*))owl_cmd_free); |
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| 56 | return(0); |
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| 57 | } |
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| 58 | |
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| 59 | char *owl_cmddict_execute(owl_cmddict *cd, owl_context *ctx, char *cmdbuff) { |
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| 60 | char **argv; |
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| 61 | int argc; |
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| 62 | char *tmpbuff; |
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| 63 | char *retval = NULL; |
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| 64 | owl_cmd *cmd; |
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| 65 | |
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| 66 | tmpbuff=strdup(cmdbuff); |
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| 67 | argv=owl_parseline(tmpbuff, &argc); |
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| 68 | if (argc < 0) { |
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| 69 | owl_free(tmpbuff); |
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| 70 | sepbar(NULL); |
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| 71 | owl_function_makemsg("Unbalanced quotes"); |
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| 72 | return NULL; |
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| 73 | } |
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| 74 | |
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| 75 | if (argc < 1) return(NULL); |
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| 76 | |
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| 77 | if (!strcmp(argv[0], "")) { |
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| 78 | } else if (NULL != (cmd = (owl_cmd*)owl_dict_find_element(cd, argv[0]))) { |
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| 79 | retval = owl_cmd_execute(cmd, cd, ctx, argc, argv, cmdbuff); |
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| 80 | } else { |
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| 81 | owl_function_makemsg("Unknown command '%s'.", cmdbuff); |
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| 82 | } |
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| 83 | owl_parsefree(argv, argc); |
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| 84 | owl_free(tmpbuff); |
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| 85 | sepbar(NULL); |
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| 86 | return retval; |
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| 87 | } |
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| 88 | |
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| 89 | /*********************************************************************/ |
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| 90 | /***************************** COMMAND *******************************/ |
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| 91 | /*********************************************************************/ |
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| 92 | |
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| 93 | /* sets up a new command based on a template, copying strings */ |
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| 94 | int owl_cmd_create_from_template(owl_cmd *cmd, owl_cmd *templ) { |
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| 95 | *cmd = *templ; |
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| 96 | if (!templ->name) return(-1); |
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| 97 | cmd->name = owl_strdup(templ->name); |
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| 98 | if (cmd->summary) cmd->summary = owl_strdup(templ->summary); |
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| 99 | if (cmd->usage) cmd->usage = owl_strdup(templ->usage); |
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| 100 | if (cmd->description) cmd->description = owl_strdup(templ->description); |
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| 101 | if (cmd->cmd_aliased_to) cmd->cmd_aliased_to = owl_strdup(templ->cmd_aliased_to); |
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| 102 | return(0); |
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| 103 | } |
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| 104 | |
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| 105 | int owl_cmd_create_alias(owl_cmd *cmd, char *name, char *aliased_to) { |
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| 106 | memset(cmd, 0, sizeof(owl_cmd)); |
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| 107 | cmd->name = owl_strdup(name); |
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| 108 | cmd->cmd_aliased_to = owl_strdup(aliased_to); |
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| 109 | cmd->summary = owl_malloc(strlen(name)+strlen(OWL_CMD_ALIAS_SUMMARY_PREFIX)+2); |
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| 110 | strcpy(cmd->summary, OWL_CMD_ALIAS_SUMMARY_PREFIX); |
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| 111 | strcat(cmd->summary, name); |
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| 112 | return(0); |
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| 113 | } |
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| 114 | |
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| 115 | void owl_cmd_free(owl_cmd *cmd) { |
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| 116 | if (cmd->name) owl_free(cmd->name); |
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| 117 | if (cmd->summary) owl_free(cmd->summary); |
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| 118 | if (cmd->usage) owl_free(cmd->usage); |
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| 119 | if (cmd->description) owl_free(cmd->description); |
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| 120 | } |
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| 121 | |
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| 122 | int owl_cmd_is_context_valid(owl_cmd *cmd, owl_context *ctx) { |
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| 123 | if (owl_context_matches(ctx, cmd->validctx)) return 1; |
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| 124 | else return 0; |
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| 125 | } |
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| 126 | |
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| 127 | char *owl_cmd_execute(owl_cmd *cmd, owl_cmddict *cd, owl_context *ctx, int argc, char **argv, char *cmdbuff) { |
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| 128 | static int alias_recurse_depth = 0; |
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| 129 | int ival=0; |
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| 130 | char *cmdbuffargs, *newcmd, *rv=NULL; |
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| 131 | |
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| 132 | if (argc < 1) return(NULL); |
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| 133 | |
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| 134 | /* Recurse if this is an alias */ |
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| 135 | if (cmd->cmd_aliased_to) { |
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| 136 | if (alias_recurse_depth++ > 50) { |
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| 137 | owl_function_makemsg("Alias loop detected for '%s'.", cmdbuff); |
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| 138 | } else { |
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| 139 | cmdbuffargs = skiptokens(cmdbuff, 1); |
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| 140 | newcmd = owl_malloc(strlen(cmd->cmd_aliased_to)+strlen(cmdbuffargs)+2); |
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| 141 | strcpy(newcmd, cmd->cmd_aliased_to); |
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| 142 | strcat(newcmd, " "); |
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| 143 | strcat(newcmd, cmdbuffargs); |
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| 144 | rv = owl_function_command(newcmd); |
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| 145 | owl_free(newcmd); |
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| 146 | } |
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| 147 | alias_recurse_depth--; |
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| 148 | return rv; |
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| 149 | } |
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| 150 | |
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| 151 | /* Do validation and conversions */ |
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| 152 | if (cmd->cmd_ctxargs_fn || cmd->cmd_ctxv_fn || cmd->cmd_ctxi_fn) { |
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| 153 | if (!owl_cmd_is_context_valid(cmd, ctx)) { |
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| 154 | owl_function_makemsg("Invalid context for command '%s'.", cmdbuff); |
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| 155 | return NULL; |
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| 156 | } |
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| 157 | } |
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| 158 | |
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| 159 | if ((argc != 1) && (cmd->cmd_v_fn || cmd->cmd_ctxv_fn)) { |
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| 160 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
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| 161 | return NULL; |
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| 162 | } |
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| 163 | |
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| 164 | if (cmd->cmd_i_fn || cmd->cmd_ctxi_fn) { |
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| 165 | char *ep = "x"; |
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| 166 | if (argc != 2) { |
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| 167 | owl_function_makemsg("Wrong number of arguments for %s command.", argv[0]); |
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| 168 | return NULL; |
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| 169 | } |
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| 170 | ival = strtol(argv[1], &ep, 10); |
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| 171 | if (*ep || ep==argv[1]) { |
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| 172 | owl_function_makemsg("Invalid argument '%s' for %s command.", argv[1], argv[0]); |
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| 173 | return(NULL); |
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| 174 | } |
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| 175 | } |
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| 176 | |
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| 177 | if (cmd->cmd_args_fn) { |
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| 178 | return cmd->cmd_args_fn(argc, argv, cmdbuff); |
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| 179 | } else if (cmd->cmd_v_fn) { |
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| 180 | cmd->cmd_v_fn(); |
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| 181 | } else if (cmd->cmd_i_fn) { |
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| 182 | cmd->cmd_i_fn(ival); |
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| 183 | } else if (cmd->cmd_ctxargs_fn) { |
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| 184 | return cmd->cmd_ctxargs_fn(owl_context_get_data(ctx), argc, argv, cmdbuff); |
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| 185 | } else if (cmd->cmd_ctxv_fn) { |
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| 186 | cmd->cmd_ctxv_fn(owl_context_get_data(ctx)); |
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| 187 | } else if (cmd->cmd_ctxi_fn) { |
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| 188 | cmd->cmd_ctxi_fn(owl_context_get_data(ctx), ival); |
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| 189 | } |
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| 190 | |
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| 191 | return NULL; |
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| 192 | } |
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| 193 | |
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| 194 | /* returns a reference */ |
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| 195 | char *owl_cmd_get_summary(owl_cmd *cmd) { |
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| 196 | return cmd->summary; |
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| 197 | } |
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| 198 | |
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| 199 | /* returns a summary line describing this keymap. the caller must free. */ |
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| 200 | char *owl_cmd_describe(owl_cmd *cmd) { |
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| 201 | char *s; |
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| 202 | int slen; |
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| 203 | if (!cmd || !cmd->name || !cmd->summary) return NULL; |
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| 204 | slen = strlen(cmd->name)+strlen(cmd->summary)+30; |
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| 205 | s = owl_malloc(slen); |
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| 206 | snprintf(s, slen-1, "%-25s - %s", cmd->name, cmd->summary); |
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| 207 | return s; |
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| 208 | } |
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| 209 | |
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| 210 | |
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| 211 | |
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| 212 | void owl_cmd_get_help(owl_cmddict *d, char *name, owl_fmtext *fm) { |
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| 213 | char *indent, *s; |
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| 214 | owl_cmd *cmd; |
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| 215 | |
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| 216 | if (!name || (cmd = owl_dict_find_element(d, name)) == NULL) { |
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| 217 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
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| 218 | owl_fmtext_append_normal(fm, "No such command...\n"); |
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| 219 | return; |
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| 220 | } |
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| 221 | |
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| 222 | owl_fmtext_append_bold(fm, "OWL HELP\n\n"); |
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| 223 | owl_fmtext_append_bold(fm, "NAME\n\n"); |
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| 224 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
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| 225 | owl_fmtext_append_normal(fm, cmd->name); |
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| 226 | |
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| 227 | if (cmd->summary && *cmd->summary) { |
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| 228 | owl_fmtext_append_normal(fm, " - "); |
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| 229 | owl_fmtext_append_normal(fm, cmd->summary); |
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| 230 | } |
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| 231 | owl_fmtext_append_normal(fm, "\n"); |
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| 232 | |
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| 233 | if (cmd->usage && *cmd->usage) { |
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| 234 | s = cmd->usage; |
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| 235 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
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| 236 | owl_text_indent(indent, s, OWL_TAB); |
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| 237 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
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| 238 | owl_fmtext_append_normal(fm, indent); |
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| 239 | owl_fmtext_append_normal(fm, "\n"); |
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| 240 | owl_free(indent); |
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| 241 | } else { |
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| 242 | owl_fmtext_append_bold(fm, "\nSYNOPSIS\n"); |
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| 243 | owl_fmtext_append_normal(fm, OWL_TABSTR); |
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| 244 | owl_fmtext_append_normal(fm, cmd->name); |
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| 245 | owl_fmtext_append_normal(fm, "\n"); |
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| 246 | } |
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| 247 | |
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| 248 | if (cmd->description && *cmd->description) { |
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| 249 | s = cmd->description; |
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| 250 | indent = owl_malloc(strlen(s)+(owl_text_num_lines(s)+3)*OWL_TAB+1); |
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| 251 | owl_text_indent(indent, s, OWL_TAB); |
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| 252 | owl_fmtext_append_bold(fm, "\nDESCRIPTION\n"); |
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| 253 | owl_fmtext_append_normal(fm, indent); |
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| 254 | owl_fmtext_append_normal(fm, "\n"); |
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| 255 | owl_free(indent); |
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| 256 | } |
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| 257 | |
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| 258 | owl_fmtext_append_normal(fm, "\n\n"); |
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| 259 | } |
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