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rofi/source/dialogs/script.c
Dave Davenport 5a20094777 [Script] Reduce scope and swap tests. (cppcheck)
2017-12-11 18:42:35 +01:00

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/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2017 Qball Cow <qball@gmpclient.org>
*
* 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.
*
*/
#define G_LOG_DOMAIN "Dialogs.Script"
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <errno.h>
#include "rofi.h"
#include "dialogs/script.h"
#include "helper.h"
#include "widgets/textbox.h"
#include "mode-private.h"
typedef struct
{
/** ID of the current script. */
unsigned int id;
/** List of visible items. */
char **cmd_list;
/** length list of visible items. */
unsigned int cmd_list_length;
/** Urgent list */
struct rofi_range_pair * urgent_list;
unsigned int num_urgent_list;
/** Active list */
struct rofi_range_pair * active_list;
unsigned int num_active_list;
/** Configuration settings. */
char *message;
char *prompt;
gboolean do_markup;
} ScriptModePrivateData;
static void parse_header_entry ( Mode *sw, char *line, ssize_t length )
{
ScriptModePrivateData *pd = (ScriptModePrivateData *) sw->private_data;
ssize_t length_key = 0;//strlen ( line );
while ( length_key <= length && line[length_key] != '\x1f' ) {
length_key++;
}
if ( length_key < length ) {
line[length_key] = '\0';
char *value = line + length_key + 1;
if ( strcasecmp ( line, "message" ) == 0 ) {
g_free ( pd->message );
pd->message = g_strdup ( value );
}
else if ( strcasecmp ( line, "prompt" ) == 0 ) {
g_free ( pd->prompt );
pd->prompt = g_strdup ( value );
sw->display_name = pd->prompt;
}
else if ( strcasecmp ( line, "markup-rows" ) == 0 ) {
pd->do_markup = ( strcasecmp ( value, "true" ) == 0 );
}
else if ( strcasecmp ( line, "urgent" ) == 0 ) {
parse_ranges ( value, &( pd->urgent_list ), &( pd->num_urgent_list ) );
}
else if ( strcasecmp ( line, "active" ) == 0 ) {
parse_ranges ( value, &( pd->active_list ), &( pd->num_active_list ) );
}
}
}
static char **get_script_output ( Mode *sw, char *command, char *arg, unsigned int *length )
{
int fd = -1;
GError *error = NULL;
char **retv = NULL;
char **argv = NULL;
int argc = 0;
*length = 0;
if ( g_shell_parse_argv ( command, &argc, &argv, &error ) ) {
argv = g_realloc ( argv, ( argc + 2 ) * sizeof ( char* ) );
argv[argc] = g_strdup ( arg );
argv[argc + 1] = NULL;
g_spawn_async_with_pipes ( NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, NULL, &fd, NULL, &error );
}
if ( error != NULL ) {
char *msg = g_strdup_printf ( "Failed to execute: '%s'\nError: '%s'", command, error->message );
rofi_view_error_dialog ( msg, FALSE );
g_free ( msg );
// print error.
g_error_free ( error );
fd = -1;
}
if ( fd >= 0 ) {
FILE *inp = fdopen ( fd, "r" );
if ( inp ) {
char *buffer = NULL;
size_t buffer_length = 0;
ssize_t read_length = 0;
size_t actual_size = 0;
while ( ( read_length = getline ( &buffer, &buffer_length, inp ) ) > 0 ) {
// Filter out line-end.
if ( buffer[read_length - 1] == '\n' ) {
buffer[read_length - 1] = '\0';
}
if ( buffer[0] == '\0' ) {
parse_header_entry ( sw, &buffer[1], read_length - 1 );
}
else {
if ( actual_size < ( ( *length ) + 2 ) ) {
actual_size += 256;
retv = g_realloc ( retv, ( actual_size ) * sizeof ( char* ) );
}
retv[( *length )] = g_strdup ( buffer );
retv[( *length ) + 1] = NULL;
( *length )++;
}
}
if ( buffer ) {
free ( buffer );
}
if ( fclose ( inp ) != 0 ) {
g_warning ( "Failed to close stdout off executor script: '%s'",
g_strerror ( errno ) );
}
}
}
return retv;
}
static char **execute_executor ( Mode *sw, char *result, unsigned int *length )
{
char **retv = get_script_output ( sw, sw->ed, result, length );
return retv;
}
static void script_switcher_free ( Mode *sw )
{
if ( sw == NULL ) {
return;
}
g_free ( sw->name );
g_free ( sw->ed );
g_free ( sw );
}
static int script_mode_init ( Mode *sw )
{
if ( sw->private_data == NULL ) {
ScriptModePrivateData *pd = g_malloc0 ( sizeof ( *pd ) );
sw->private_data = (void *) pd;
pd->cmd_list = get_script_output ( sw, (char *) sw->ed, NULL, &( pd->cmd_list_length ) );
}
return TRUE;
}
static unsigned int script_mode_get_num_entries ( const Mode *sw )
{
const ScriptModePrivateData *rmpd = (const ScriptModePrivateData *) sw->private_data;
return rmpd->cmd_list_length;
}
static ModeMode script_mode_result ( Mode *sw, int mretv, char **input, unsigned int selected_line )
{
ScriptModePrivateData *rmpd = (ScriptModePrivateData *) sw->private_data;
ModeMode retv = MODE_EXIT;
char **new_list = NULL;
unsigned int new_length = 0;
if ( ( mretv & MENU_NEXT ) ) {
retv = NEXT_DIALOG;
}
else if ( ( mretv & MENU_PREVIOUS ) ) {
retv = PREVIOUS_DIALOG;
}
else if ( ( mretv & MENU_QUICK_SWITCH ) ) {
retv = ( mretv & MENU_LOWER_MASK );
}
else if ( ( mretv & MENU_OK ) && rmpd->cmd_list[selected_line] != NULL ) {
new_list = execute_executor ( sw, rmpd->cmd_list[selected_line], &new_length );
}
else if ( ( mretv & MENU_CUSTOM_INPUT ) && *input != NULL && *input[0] != '\0' ) {
new_list = execute_executor ( sw, *input, &new_length );
}
// If a new list was generated, use that an loop around.
if ( new_list != NULL ) {
g_strfreev ( rmpd->cmd_list );
rmpd->cmd_list = new_list;
rmpd->cmd_list_length = new_length;
retv = RESET_DIALOG;
}
return retv;
}
static void script_mode_destroy ( Mode *sw )
{
ScriptModePrivateData *rmpd = (ScriptModePrivateData *) sw->private_data;
if ( rmpd != NULL ) {
g_strfreev ( rmpd->cmd_list );
g_free ( rmpd->message );
g_free ( rmpd->prompt );
g_free ( rmpd->urgent_list );
g_free ( rmpd->active_list );
g_free ( rmpd );
sw->private_data = NULL;
}
}
static char *_get_display_value ( const Mode *sw, unsigned int selected_line, G_GNUC_UNUSED int *state, G_GNUC_UNUSED GList **list, int get_entry )
{
ScriptModePrivateData *pd = sw->private_data;
for ( unsigned int i = 0; i < pd->num_active_list; i++ ) {
if ( selected_line >= pd->active_list[i].start && selected_line <= pd->active_list[i].stop ) {
*state |= ACTIVE;
}
}
for ( unsigned int i = 0; i < pd->num_urgent_list; i++ ) {
if ( selected_line >= pd->urgent_list[i].start && selected_line <= pd->urgent_list[i].stop ) {
*state |= URGENT;
}
}
if ( pd->do_markup ) {
*state |= MARKUP;
}
return get_entry ? g_strdup ( pd->cmd_list[selected_line] ) : NULL;
}
static int script_token_match ( const Mode *sw, rofi_int_matcher **tokens, unsigned int index )
{
ScriptModePrivateData *rmpd = sw->private_data;
return helper_token_match ( tokens, rmpd->cmd_list[index] );
}
static char *script_get_message ( const Mode *sw )
{
ScriptModePrivateData *pd = sw->private_data;
return g_strdup ( pd->message );
}
#include "mode-private.h"
Mode *script_switcher_parse_setup ( const char *str )
{
Mode *sw = g_malloc0 ( sizeof ( *sw ) );
char *endp = NULL;
char *parse = g_strdup ( str );
unsigned int index = 0;
const char *const sep = ":";
for ( char *token = strtok_r ( parse, sep, &endp ); token != NULL; token = strtok_r ( NULL, sep, &endp ) ) {
if ( index == 0 ) {
sw->name = g_strdup ( token );
}
else if ( index == 1 ) {
sw->ed = (void *) rofi_expand_path ( token );
}
index++;
}
g_free ( parse );
if ( index == 2 ) {
sw->free = script_switcher_free;
sw->_init = script_mode_init;
sw->_get_num_entries = script_mode_get_num_entries;
sw->_result = script_mode_result;
sw->_destroy = script_mode_destroy;
sw->_token_match = script_token_match;
sw->_get_message = script_get_message;
sw->_get_completion = NULL,
sw->_preprocess_input = NULL,
sw->_get_display_value = _get_display_value;
return sw;
}
fprintf ( stderr, "The script command '%s' has %u options, but needs 2: <name>:<script>.", str, index );
script_switcher_free ( sw );
return NULL;
}
gboolean script_switcher_is_valid ( const char *token )
{
return strchr ( token, ':' ) != NULL;
}
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