diff options
Diffstat (limited to '')
| -rw-r--r-- | cmd.c | 872 |
1 files changed, 872 insertions, 0 deletions
@@ -0,0 +1,872 @@ +/* $OpenBSD$ */ + +/* + * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER + * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <sys/time.h> + +#include <fnmatch.h> +#include <pwd.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "tmux.h" + +extern const struct cmd_entry cmd_attach_session_entry; +extern const struct cmd_entry cmd_bind_key_entry; +extern const struct cmd_entry cmd_break_pane_entry; +extern const struct cmd_entry cmd_capture_pane_entry; +extern const struct cmd_entry cmd_choose_buffer_entry; +extern const struct cmd_entry cmd_choose_client_entry; +extern const struct cmd_entry cmd_choose_tree_entry; +extern const struct cmd_entry cmd_clear_history_entry; +extern const struct cmd_entry cmd_clear_prompt_history_entry; +extern const struct cmd_entry cmd_clock_mode_entry; +extern const struct cmd_entry cmd_command_prompt_entry; +extern const struct cmd_entry cmd_confirm_before_entry; +extern const struct cmd_entry cmd_copy_mode_entry; +extern const struct cmd_entry cmd_customize_mode_entry; +extern const struct cmd_entry cmd_delete_buffer_entry; +extern const struct cmd_entry cmd_detach_client_entry; +extern const struct cmd_entry cmd_display_menu_entry; +extern const struct cmd_entry cmd_display_message_entry; +extern const struct cmd_entry cmd_display_popup_entry; +extern const struct cmd_entry cmd_display_panes_entry; +extern const struct cmd_entry cmd_down_pane_entry; +extern const struct cmd_entry cmd_find_window_entry; +extern const struct cmd_entry cmd_has_session_entry; +extern const struct cmd_entry cmd_if_shell_entry; +extern const struct cmd_entry cmd_join_pane_entry; +extern const struct cmd_entry cmd_kill_pane_entry; +extern const struct cmd_entry cmd_kill_server_entry; +extern const struct cmd_entry cmd_kill_session_entry; +extern const struct cmd_entry cmd_kill_window_entry; +extern const struct cmd_entry cmd_last_pane_entry; +extern const struct cmd_entry cmd_last_window_entry; +extern const struct cmd_entry cmd_link_window_entry; +extern const struct cmd_entry cmd_list_buffers_entry; +extern const struct cmd_entry cmd_list_clients_entry; +extern const struct cmd_entry cmd_list_commands_entry; +extern const struct cmd_entry cmd_list_keys_entry; +extern const struct cmd_entry cmd_list_panes_entry; +extern const struct cmd_entry cmd_list_sessions_entry; +extern const struct cmd_entry cmd_list_windows_entry; +extern const struct cmd_entry cmd_load_buffer_entry; +extern const struct cmd_entry cmd_lock_client_entry; +extern const struct cmd_entry cmd_lock_server_entry; +extern const struct cmd_entry cmd_lock_session_entry; +extern const struct cmd_entry cmd_move_pane_entry; +extern const struct cmd_entry cmd_move_window_entry; +extern const struct cmd_entry cmd_new_session_entry; +extern const struct cmd_entry cmd_new_window_entry; +extern const struct cmd_entry cmd_next_layout_entry; +extern const struct cmd_entry cmd_next_window_entry; +extern const struct cmd_entry cmd_paste_buffer_entry; +extern const struct cmd_entry cmd_pipe_pane_entry; +extern const struct cmd_entry cmd_previous_layout_entry; +extern const struct cmd_entry cmd_previous_window_entry; +extern const struct cmd_entry cmd_refresh_client_entry; +extern const struct cmd_entry cmd_rename_session_entry; +extern const struct cmd_entry cmd_rename_window_entry; +extern const struct cmd_entry cmd_resize_pane_entry; +extern const struct cmd_entry cmd_resize_window_entry; +extern const struct cmd_entry cmd_respawn_pane_entry; +extern const struct cmd_entry cmd_respawn_window_entry; +extern const struct cmd_entry cmd_rotate_window_entry; +extern const struct cmd_entry cmd_run_shell_entry; +extern const struct cmd_entry cmd_save_buffer_entry; +extern const struct cmd_entry cmd_select_layout_entry; +extern const struct cmd_entry cmd_select_pane_entry; +extern const struct cmd_entry cmd_select_window_entry; +extern const struct cmd_entry cmd_send_keys_entry; +extern const struct cmd_entry cmd_send_prefix_entry; +extern const struct cmd_entry cmd_server_access_entry; +extern const struct cmd_entry cmd_set_buffer_entry; +extern const struct cmd_entry cmd_set_environment_entry; +extern const struct cmd_entry cmd_set_hook_entry; +extern const struct cmd_entry cmd_set_option_entry; +extern const struct cmd_entry cmd_set_window_option_entry; +extern const struct cmd_entry cmd_show_buffer_entry; +extern const struct cmd_entry cmd_show_environment_entry; +extern const struct cmd_entry cmd_show_hooks_entry; +extern const struct cmd_entry cmd_show_messages_entry; +extern const struct cmd_entry cmd_show_options_entry; +extern const struct cmd_entry cmd_show_prompt_history_entry; +extern const struct cmd_entry cmd_show_window_options_entry; +extern const struct cmd_entry cmd_source_file_entry; +extern const struct cmd_entry cmd_split_window_entry; +extern const struct cmd_entry cmd_start_server_entry; +extern const struct cmd_entry cmd_suspend_client_entry; +extern const struct cmd_entry cmd_swap_pane_entry; +extern const struct cmd_entry cmd_swap_window_entry; +extern const struct cmd_entry cmd_switch_client_entry; +extern const struct cmd_entry cmd_unbind_key_entry; +extern const struct cmd_entry cmd_unlink_window_entry; +extern const struct cmd_entry cmd_up_pane_entry; +extern const struct cmd_entry cmd_wait_for_entry; + +const struct cmd_entry *cmd_table[] = { + &cmd_attach_session_entry, + &cmd_bind_key_entry, + &cmd_break_pane_entry, + &cmd_capture_pane_entry, + &cmd_choose_buffer_entry, + &cmd_choose_client_entry, + &cmd_choose_tree_entry, + &cmd_clear_history_entry, + &cmd_clear_prompt_history_entry, + &cmd_clock_mode_entry, + &cmd_command_prompt_entry, + &cmd_confirm_before_entry, + &cmd_copy_mode_entry, + &cmd_customize_mode_entry, + &cmd_delete_buffer_entry, + &cmd_detach_client_entry, + &cmd_display_menu_entry, + &cmd_display_message_entry, + &cmd_display_popup_entry, + &cmd_display_panes_entry, + &cmd_find_window_entry, + &cmd_has_session_entry, + &cmd_if_shell_entry, + &cmd_join_pane_entry, + &cmd_kill_pane_entry, + &cmd_kill_server_entry, + &cmd_kill_session_entry, + &cmd_kill_window_entry, + &cmd_last_pane_entry, + &cmd_last_window_entry, + &cmd_link_window_entry, + &cmd_list_buffers_entry, + &cmd_list_clients_entry, + &cmd_list_commands_entry, + &cmd_list_keys_entry, + &cmd_list_panes_entry, + &cmd_list_sessions_entry, + &cmd_list_windows_entry, + &cmd_load_buffer_entry, + &cmd_lock_client_entry, + &cmd_lock_server_entry, + &cmd_lock_session_entry, + &cmd_move_pane_entry, + &cmd_move_window_entry, + &cmd_new_session_entry, + &cmd_new_window_entry, + &cmd_next_layout_entry, + &cmd_next_window_entry, + &cmd_paste_buffer_entry, + &cmd_pipe_pane_entry, + &cmd_previous_layout_entry, + &cmd_previous_window_entry, + &cmd_refresh_client_entry, + &cmd_rename_session_entry, + &cmd_rename_window_entry, + &cmd_resize_pane_entry, + &cmd_resize_window_entry, + &cmd_respawn_pane_entry, + &cmd_respawn_window_entry, + &cmd_rotate_window_entry, + &cmd_run_shell_entry, + &cmd_save_buffer_entry, + &cmd_select_layout_entry, + &cmd_select_pane_entry, + &cmd_select_window_entry, + &cmd_send_keys_entry, + &cmd_send_prefix_entry, + &cmd_server_access_entry, + &cmd_set_buffer_entry, + &cmd_set_environment_entry, + &cmd_set_hook_entry, + &cmd_set_option_entry, + &cmd_set_window_option_entry, + &cmd_show_buffer_entry, + &cmd_show_environment_entry, + &cmd_show_hooks_entry, + &cmd_show_messages_entry, + &cmd_show_options_entry, + &cmd_show_prompt_history_entry, + &cmd_show_window_options_entry, + &cmd_source_file_entry, + &cmd_split_window_entry, + &cmd_start_server_entry, + &cmd_suspend_client_entry, + &cmd_swap_pane_entry, + &cmd_swap_window_entry, + &cmd_switch_client_entry, + &cmd_unbind_key_entry, + &cmd_unlink_window_entry, + &cmd_wait_for_entry, + NULL +}; + +/* Instance of a command. */ +struct cmd { + const struct cmd_entry *entry; + struct args *args; + u_int group; + + char *file; + u_int line; + + TAILQ_ENTRY(cmd) qentry; +}; +TAILQ_HEAD(cmds, cmd); + +/* Next group number for new command list. */ +static u_int cmd_list_next_group = 1; + +/* Log an argument vector. */ +void printflike(3, 4) +cmd_log_argv(int argc, char **argv, const char *fmt, ...) +{ + char *prefix; + va_list ap; + int i; + + va_start(ap, fmt); + xvasprintf(&prefix, fmt, ap); + va_end(ap); + + for (i = 0; i < argc; i++) + log_debug("%s: argv[%d]=%s", prefix, i, argv[i]); + free(prefix); +} + +/* Prepend to an argument vector. */ +void +cmd_prepend_argv(int *argc, char ***argv, const char *arg) +{ + char **new_argv; + int i; + + new_argv = xreallocarray(NULL, (*argc) + 1, sizeof *new_argv); + new_argv[0] = xstrdup(arg); + for (i = 0; i < *argc; i++) + new_argv[1 + i] = (*argv)[i]; + + free(*argv); + *argv = new_argv; + (*argc)++; +} + +/* Append to an argument vector. */ +void +cmd_append_argv(int *argc, char ***argv, const char *arg) +{ + *argv = xreallocarray(*argv, (*argc) + 1, sizeof **argv); + (*argv)[(*argc)++] = xstrdup(arg); +} + +/* Pack an argument vector up into a buffer. */ +int +cmd_pack_argv(int argc, char **argv, char *buf, size_t len) +{ + size_t arglen; + int i; + + if (argc == 0) + return (0); + cmd_log_argv(argc, argv, "%s", __func__); + + *buf = '\0'; + for (i = 0; i < argc; i++) { + if (strlcpy(buf, argv[i], len) >= len) + return (-1); + arglen = strlen(argv[i]) + 1; + buf += arglen; + len -= arglen; + } + + return (0); +} + +/* Unpack an argument vector from a packed buffer. */ +int +cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv) +{ + int i; + size_t arglen; + + if (argc == 0) + return (0); + *argv = xcalloc(argc, sizeof **argv); + + buf[len - 1] = '\0'; + for (i = 0; i < argc; i++) { + if (len == 0) { + cmd_free_argv(argc, *argv); + return (-1); + } + + arglen = strlen(buf) + 1; + (*argv)[i] = xstrdup(buf); + + buf += arglen; + len -= arglen; + } + cmd_log_argv(argc, *argv, "%s", __func__); + + return (0); +} + +/* Copy an argument vector, ensuring it is terminated by NULL. */ +char ** +cmd_copy_argv(int argc, char **argv) +{ + char **new_argv; + int i; + + if (argc == 0) + return (NULL); + new_argv = xcalloc(argc + 1, sizeof *new_argv); + for (i = 0; i < argc; i++) { + if (argv[i] != NULL) + new_argv[i] = xstrdup(argv[i]); + } + return (new_argv); +} + +/* Free an argument vector. */ +void +cmd_free_argv(int argc, char **argv) +{ + int i; + + if (argc == 0) + return; + for (i = 0; i < argc; i++) + free(argv[i]); + free(argv); +} + +/* Convert argument vector to a string. */ +char * +cmd_stringify_argv(int argc, char **argv) +{ + char *buf = NULL, *s; + size_t len = 0; + int i; + + if (argc == 0) + return (xstrdup("")); + + for (i = 0; i < argc; i++) { + s = args_escape(argv[i]); + log_debug("%s: %u %s = %s", __func__, i, argv[i], s); + + len += strlen(s) + 1; + buf = xrealloc(buf, len); + + if (i == 0) + *buf = '\0'; + else + strlcat(buf, " ", len); + strlcat(buf, s, len); + + free(s); + } + return (buf); +} + +/* Get entry for command. */ +const struct cmd_entry * +cmd_get_entry(struct cmd *cmd) +{ + return (cmd->entry); +} + +/* Get arguments for command. */ +struct args * +cmd_get_args(struct cmd *cmd) +{ + return (cmd->args); +} + +/* Get group for command. */ +u_int +cmd_get_group(struct cmd *cmd) +{ + return (cmd->group); +} + +/* Get file and line for command. */ +void +cmd_get_source(struct cmd *cmd, const char **file, u_int *line) +{ + if (file != NULL) + *file = cmd->file; + if (line != NULL) + *line = cmd->line; +} + +/* Look for an alias for a command. */ +char * +cmd_get_alias(const char *name) +{ + struct options_entry *o; + struct options_array_item *a; + union options_value *ov; + size_t wanted, n; + const char *equals; + + o = options_get_only(global_options, "command-alias"); + if (o == NULL) + return (NULL); + wanted = strlen(name); + + a = options_array_first(o); + while (a != NULL) { + ov = options_array_item_value(a); + + equals = strchr(ov->string, '='); + if (equals != NULL) { + n = equals - ov->string; + if (n == wanted && strncmp(name, ov->string, n) == 0) + return (xstrdup(equals + 1)); + } + + a = options_array_next(a); + } + return (NULL); +} + +/* Look up a command entry by name. */ +static const struct cmd_entry * +cmd_find(const char *name, char **cause) +{ + const struct cmd_entry **loop, *entry, *found = NULL; + int ambiguous; + char s[8192]; + + ambiguous = 0; + for (loop = cmd_table; *loop != NULL; loop++) { + entry = *loop; + if (entry->alias != NULL && strcmp(entry->alias, name) == 0) { + ambiguous = 0; + found = entry; + break; + } + + if (strncmp(entry->name, name, strlen(name)) != 0) + continue; + if (found != NULL) + ambiguous = 1; + found = entry; + + if (strcmp(entry->name, name) == 0) + break; + } + if (ambiguous) + goto ambiguous; + if (found == NULL) { + xasprintf(cause, "unknown command: %s", name); + return (NULL); + } + return (found); + +ambiguous: + *s = '\0'; + for (loop = cmd_table; *loop != NULL; loop++) { + entry = *loop; + if (strncmp(entry->name, name, strlen(name)) != 0) + continue; + if (strlcat(s, entry->name, sizeof s) >= sizeof s) + break; + if (strlcat(s, ", ", sizeof s) >= sizeof s) + break; + } + s[strlen(s) - 2] = '\0'; + xasprintf(cause, "ambiguous command: %s, could be: %s", name, s); + return (NULL); +} + +/* Parse a single command from an argument vector. */ +struct cmd * +cmd_parse(struct args_value *values, u_int count, const char *file, u_int line, + char **cause) +{ + const struct cmd_entry *entry; + struct cmd *cmd; + struct args *args; + char *error = NULL; + + if (count == 0 || values[0].type != ARGS_STRING) { + xasprintf(cause, "no command"); + return (NULL); + } + entry = cmd_find(values[0].string, cause); + if (entry == NULL) + return (NULL); + + args = args_parse(&entry->args, values, count, &error); + if (args == NULL && error == NULL) { + xasprintf(cause, "usage: %s %s", entry->name, entry->usage); + return (NULL); + } + if (args == NULL) { + xasprintf(cause, "command %s: %s", entry->name, error); + free(error); + return (NULL); + } + + cmd = xcalloc(1, sizeof *cmd); + cmd->entry = entry; + cmd->args = args; + + if (file != NULL) + cmd->file = xstrdup(file); + cmd->line = line; + + return (cmd); +} + +/* Free a command. */ +void +cmd_free(struct cmd *cmd) +{ + free(cmd->file); + + args_free(cmd->args); + free(cmd); +} + +/* Copy a command. */ +struct cmd * +cmd_copy(struct cmd *cmd, int argc, char **argv) +{ + struct cmd *new_cmd; + + new_cmd = xcalloc(1, sizeof *new_cmd); + new_cmd->entry = cmd->entry; + new_cmd->args = args_copy(cmd->args, argc, argv); + + if (cmd->file != NULL) + new_cmd->file = xstrdup(cmd->file); + new_cmd->line = cmd->line; + + return (new_cmd); +} + +/* Get a command as a string. */ +char * +cmd_print(struct cmd *cmd) +{ + char *out, *s; + + s = args_print(cmd->args); + if (*s != '\0') + xasprintf(&out, "%s %s", cmd->entry->name, s); + else + out = xstrdup(cmd->entry->name); + free(s); + + return (out); +} + +/* Create a new command list. */ +struct cmd_list * +cmd_list_new(void) +{ + struct cmd_list *cmdlist; + + cmdlist = xcalloc(1, sizeof *cmdlist); + cmdlist->references = 1; + cmdlist->group = cmd_list_next_group++; + cmdlist->list = xcalloc(1, sizeof *cmdlist->list); + TAILQ_INIT(cmdlist->list); + return (cmdlist); +} + +/* Append a command to a command list. */ +void +cmd_list_append(struct cmd_list *cmdlist, struct cmd *cmd) +{ + cmd->group = cmdlist->group; + TAILQ_INSERT_TAIL(cmdlist->list, cmd, qentry); +} + +/* Append all commands from one list to another. */ +void +cmd_list_append_all(struct cmd_list *cmdlist, struct cmd_list *from) +{ + struct cmd *cmd; + + TAILQ_FOREACH(cmd, from->list, qentry) + cmd->group = cmdlist->group; + TAILQ_CONCAT(cmdlist->list, from->list, qentry); +} + +/* Move all commands from one command list to another. */ +void +cmd_list_move(struct cmd_list *cmdlist, struct cmd_list *from) +{ + TAILQ_CONCAT(cmdlist->list, from->list, qentry); + cmdlist->group = cmd_list_next_group++; +} + +/* Free a command list. */ +void +cmd_list_free(struct cmd_list *cmdlist) +{ + struct cmd *cmd, *cmd1; + + if (--cmdlist->references != 0) + return; + + TAILQ_FOREACH_SAFE(cmd, cmdlist->list, qentry, cmd1) { + TAILQ_REMOVE(cmdlist->list, cmd, qentry); + cmd_free(cmd); + } + free(cmdlist->list); + free(cmdlist); +} + +/* Copy a command list, expanding %s in arguments. */ +struct cmd_list * +cmd_list_copy(struct cmd_list *cmdlist, int argc, char **argv) +{ + struct cmd *cmd; + struct cmd_list *new_cmdlist; + struct cmd *new_cmd; + u_int group = cmdlist->group; + char *s; + + s = cmd_list_print(cmdlist, 0); + log_debug("%s: %s", __func__, s); + free(s); + + new_cmdlist = cmd_list_new(); + TAILQ_FOREACH(cmd, cmdlist->list, qentry) { + if (cmd->group != group) { + new_cmdlist->group = cmd_list_next_group++; + group = cmd->group; + } + new_cmd = cmd_copy(cmd, argc, argv); + cmd_list_append(new_cmdlist, new_cmd); + } + + s = cmd_list_print(new_cmdlist, 0); + log_debug("%s: %s", __func__, s); + free(s); + + return (new_cmdlist); +} + +/* Get a command list as a string. */ +char * +cmd_list_print(struct cmd_list *cmdlist, int escaped) +{ + struct cmd *cmd, *next; + char *buf, *this; + size_t len; + + len = 1; + buf = xcalloc(1, len); + + TAILQ_FOREACH(cmd, cmdlist->list, qentry) { + this = cmd_print(cmd); + + len += strlen(this) + 6; + buf = xrealloc(buf, len); + + strlcat(buf, this, len); + + next = TAILQ_NEXT(cmd, qentry); + if (next != NULL) { + if (cmd->group != next->group) { + if (escaped) + strlcat(buf, " \\;\\; ", len); + else + strlcat(buf, " ;; ", len); + } else { + if (escaped) + strlcat(buf, " \\; ", len); + else + strlcat(buf, " ; ", len); + } + } + + free(this); + } + + return (buf); +} + +/* Get first command in list. */ +struct cmd * +cmd_list_first(struct cmd_list *cmdlist) +{ + return (TAILQ_FIRST(cmdlist->list)); +} + +/* Get next command in list. */ +struct cmd * +cmd_list_next(struct cmd *cmd) +{ + return (TAILQ_NEXT(cmd, qentry)); +} + +/* Do all of the commands in this command list have this flag? */ +int +cmd_list_all_have(struct cmd_list *cmdlist, int flag) +{ + struct cmd *cmd; + + TAILQ_FOREACH(cmd, cmdlist->list, qentry) { + if (~cmd->entry->flags & flag) + return (0); + } + return (1); +} + +/* Do any of the commands in this command list have this flag? */ +int +cmd_list_any_have(struct cmd_list *cmdlist, int flag) +{ + struct cmd *cmd; + + TAILQ_FOREACH(cmd, cmdlist->list, qentry) { + if (cmd->entry->flags & flag) + return (1); + } + return (0); +} + +/* Adjust current mouse position for a pane. */ +int +cmd_mouse_at(struct window_pane *wp, struct mouse_event *m, u_int *xp, + u_int *yp, int last) +{ + u_int x, y; + + if (last) { + x = m->lx + m->ox; + y = m->ly + m->oy; + } else { + x = m->x + m->ox; + y = m->y + m->oy; + } + log_debug("%s: x=%u, y=%u%s", __func__, x, y, last ? " (last)" : ""); + + if (m->statusat == 0 && y >= m->statuslines) + y -= m->statuslines; + + if (x < wp->xoff || x >= wp->xoff + wp->sx) + return (-1); + if (y < wp->yoff || y >= wp->yoff + wp->sy) + return (-1); + + if (xp != NULL) + *xp = x - wp->xoff; + if (yp != NULL) + *yp = y - wp->yoff; + return (0); +} + +/* Get current mouse window if any. */ +struct winlink * +cmd_mouse_window(struct mouse_event *m, struct session **sp) +{ + struct session *s; + struct window *w; + struct winlink *wl; + + if (!m->valid) + return (NULL); + if (m->s == -1 || (s = session_find_by_id(m->s)) == NULL) + return (NULL); + if (m->w == -1) + wl = s->curw; + else { + if ((w = window_find_by_id(m->w)) == NULL) + return (NULL); + wl = winlink_find_by_window(&s->windows, w); + } + if (sp != NULL) + *sp = s; + return (wl); +} + +/* Get current mouse pane if any. */ +struct window_pane * +cmd_mouse_pane(struct mouse_event *m, struct session **sp, + struct winlink **wlp) +{ + struct winlink *wl; + struct window_pane *wp; + + if ((wl = cmd_mouse_window(m, sp)) == NULL) + return (NULL); + if ((wp = window_pane_find_by_id(m->wp)) == NULL) + return (NULL); + if (!window_has_pane(wl->window, wp)) + return (NULL); + + if (wlp != NULL) + *wlp = wl; + return (wp); +} + +/* Replace the first %% or %idx in template by s. */ +char * +cmd_template_replace(const char *template, const char *s, int idx) +{ + char ch, *buf; + const char *ptr, *cp, quote[] = "\"\\$;~"; + int replaced, quoted; + size_t len; + + if (strchr(template, '%') == NULL) + return (xstrdup(template)); + + buf = xmalloc(1); + *buf = '\0'; + len = 0; + replaced = 0; + + ptr = template; + while (*ptr != '\0') { + switch (ch = *ptr++) { + case '%': + if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) { + if (*ptr != '%' || replaced) + break; + replaced = 1; + } + ptr++; + + quoted = (*ptr == '%'); + if (quoted) + ptr++; + + buf = xrealloc(buf, len + (strlen(s) * 3) + 1); + for (cp = s; *cp != '\0'; cp++) { + if (quoted && strchr(quote, *cp) != NULL) + buf[len++] = '\\'; + buf[len++] = *cp; + } + buf[len] = '\0'; + continue; + } + buf = xrealloc(buf, len + 2); + buf[len++] = ch; + buf[len] = '\0'; + } + + return (buf); +} |