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/*-------------------------------------------------------------------------
* C-Pluff, a plug-in framework for C
* Copyright 2007 Johannes Lehtinen
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*-----------------------------------------------------------------------*/
// GNU readline based command line input
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <readline/readline.h>
#include <readline/history.h>
#include "console.h"
static cp_plugin_info_t **plugins = NULL;
static char *cp_console_compl_cmdgen(const char *text, int state) {
static int counter;
static int textlen;
if (!state) {
counter = 0;
textlen = strlen(text);
}
while (commands[counter].name != NULL && strncmp(text, commands[counter].name, textlen)) {
counter++;
}
if (commands[counter].name == NULL) {
return NULL;
} else {
char *buffer = strdup(commands[counter].name);
counter++;
return buffer;
}
}
static char *cp_console_compl_flagsgen(const char *text, int state) {
static int counter;
static int textlen;
if (!state) {
counter = 0;
textlen = strlen(text);
}
while(load_flags[counter].name != NULL && strncmp(text, load_flags[counter].name, textlen)) {
counter++;
}
if (load_flags[counter].name == NULL) {
return NULL;
} else {
char *buffer = strdup(load_flags[counter].name);
counter++;
return buffer;
}
}
static char *cp_console_compl_loggen(const char *text, int state) {
static int counter;
static int textlen;
if (!state) {
counter = 0;
textlen = strlen(text);
}
while (log_levels[counter].name != NULL && strncmp(text, log_levels[counter].name, textlen)) {
counter++;
}
if (log_levels[counter].name == NULL) {
return NULL;
} else {
char *buffer = strdup(log_levels[counter].name);
counter++;
return buffer;
}
}
static char *cp_console_compl_plugingen(const char *text, int state) {
static int counter;
static int textlen;
if (!state) {
counter = 0;
textlen = strlen(text);
if (plugins != NULL) {
cp_release_info(context, plugins);
}
plugins = cp_get_plugins_info(context, NULL, NULL);
}
if (plugins != NULL) {
while (plugins[counter] != NULL && strncmp(text, plugins[counter]->identifier, textlen)) {
counter++;
}
if (plugins[counter] == NULL) {
cp_release_info(context, plugins);
plugins = NULL;
return NULL;
} else {
char *buffer = strdup(plugins[counter]->identifier);
counter++;
return buffer;
}
} else {
return NULL;
}
}
static char **cp_console_completion(const char *text, int start, int end) {
int cs, ce;
char **matches = NULL;
// Search for start and end of command
for (cs = 0; cs < start && isspace(rl_line_buffer[cs]); cs++);
for (ce = cs; ce <= start && !isspace(rl_line_buffer[ce]); ce++);
// If no command entered yet, use command completion
if (ce >= start) {
matches = rl_completion_matches(text, cp_console_compl_cmdgen);
rl_attempted_completion_over = 1;
}
// Otherwise check if known command and complete accordingly
else {
int j = 0;
while (commands[j].name != NULL
&& strncmp(rl_line_buffer + cs, commands[j].name, ce - cs)) {
j++;
}
if (commands[j].name != NULL) {
switch(commands[j].arg_completion) {
case CPC_COMPL_FILE:
break;
case CPC_COMPL_FLAG:
matches = rl_completion_matches(text, cp_console_compl_flagsgen);
rl_attempted_completion_over = 1;
break;
case CPC_COMPL_LOG_LEVEL:
matches = rl_completion_matches(text, cp_console_compl_loggen);
rl_attempted_completion_over = 1;
break;
case CPC_COMPL_PLUGIN:
matches = rl_completion_matches(text, cp_console_compl_plugingen);
rl_attempted_completion_over = 1;
break;
default:
rl_attempted_completion_over = 1;
break;
}
} else {
rl_attempted_completion_over = 1;
}
}
return matches;
}
CP_HIDDEN void cmdline_init(void) {
rl_readline_name = PACKAGE_NAME;
rl_attempted_completion_function = cp_console_completion;
}
CP_HIDDEN char *cmdline_input(const char *prompt) {
static char *cmdline = NULL;
// Free previously returned command line, if any
if (cmdline != NULL) {
free(cmdline);
cmdline = NULL;
}
// Obtain new command line and record it for history
cmdline = readline(prompt);
if (cmdline != NULL && *cmdline != '\0') {
add_history(cmdline);
}
return cmdline;
}
CP_HIDDEN void cmdline_destroy(void) {
if (plugins != NULL) {
cp_release_info(context, plugins);
plugins = NULL;
}
}
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