rofi/source/json-dialog.c

/**
 * simpleswitcher
 *
 * MIT/X11 License
 * Copyright 2013-2014 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 _GNU_SOURCE
#include <stdlib.h>
#include <stdio.h>
#include <X11/X.h>

#include <unistd.h>
#include <signal.h>
#include <strings.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#include "simpleswitcher.h"
#include "mark-dialog.h"
#include <errno.h>
#include <linux/un.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <i3/ipc.h>

#ifdef TIMING
#include <time.h>
#endif

#include <json/json.h>

char *json_input_file = NULL;

static inline int execsh( const char *cmd ,int run_in_term )
{
// use sh for args parsing
    if ( run_in_term )
        return execlp( config.terminal_emulator, config.terminal_emulator, "-e", "sh", "-c", cmd, NULL );

    return execlp( "/bin/sh", "sh", "-c", cmd, NULL );
}
static void exec_json( const char *cmd, int run_in_term)
{
    if ( !cmd || !cmd[0] ) return;

    printf("execute: %s\n", cmd);
    signal( SIGCHLD, catch_exit );
    pid_t pid = fork();

    if ( !pid ) {
        setsid();
        execsh( cmd, run_in_term );
        exit( EXIT_FAILURE );
    }

}

typedef struct pmenu {
    char *prompt;
    int execute_in_term;
    unsigned int num_entries;
    char **entries;
    char **commands;
} pmenu;

static pmenu *get_json ( )
{
    pmenu *retv = allocate_clear(sizeof(*retv));

#ifdef TIMING
    struct timespec start, stop;
    clock_gettime( CLOCK_REALTIME, &start );
#endif

    struct json_object *jo = NULL;
    if(json_input_file != NULL) {
        jo = json_object_from_file(json_input_file);
    }

    // Create error and exit.
    if(jo == NULL) {
        retv->entries= realloc( retv->entries, ( retv->num_entries+2 )*sizeof( char* ) );
        retv->entries[retv->num_entries] = strdup( "Failed to parse json input file" );
        retv->entries[retv->num_entries+1] = NULL;
        retv->commands= realloc( retv->commands, ( retv->num_entries+2 )*sizeof( char* ) );
        retv->commands[retv->num_entries] = strdup( "" );
        retv->commands[retv->num_entries+1] = NULL;

        retv->num_entries++;
        return retv;
    }

    struct json_object *jo2;
    if(json_object_object_get_ex(jo, "prompt", &jo2)) {
        retv->prompt = strdup(json_object_get_string(jo2));
    }
    if(json_object_object_get_ex(jo, "run-in-terminal", &jo2)) {
        retv->execute_in_term = json_object_get_int(jo2);
    }

    if(json_object_object_get_ex(jo, "commands", &jo2)) {
        json_object_object_foreach(jo2, key, child) {
            retv->entries= realloc( retv->entries, ( retv->num_entries+2 )*sizeof( char* ) );
            retv->entries[retv->num_entries] = strdup( key);
            retv->entries[retv->num_entries+1] = NULL;
            retv->commands= realloc( retv->commands, ( retv->num_entries+2 )*sizeof( char* ) );
            retv->commands[retv->num_entries] = strdup( json_object_get_string(child));
            retv->commands[retv->num_entries+1] = NULL;

            retv->num_entries++;
        }
    }
    json_object_put(jo);



#ifdef TIMING
    clock_gettime( CLOCK_REALTIME, &stop );

    if ( stop.tv_sec != start.tv_sec ) {
        stop.tv_nsec += ( stop.tv_sec-start.tv_sec )*1e9;
    }

    long diff = stop.tv_nsec-start.tv_nsec;
    printf( "Time elapsed: %ld us\n", diff/1000 );
#endif
    return retv;
}

static int token_match ( char **tokens, const char *input,
                         __attribute__( ( unused ) )int index,
                         __attribute__( ( unused ) )void *data )
{
    int match = 1;

    // Do a tokenized match.
    if ( tokens ) for ( int j  = 1; match && tokens[j]; j++ ) {
            match = ( strcasestr( input, tokens[j] ) != NULL );
        }

    return match;
}

SwitcherMode json_switcher_dialog ( char **input )
{
    SwitcherMode retv = MODE_EXIT;
    // act as a launcher
    pmenu *list = get_json( );

    if ( list == NULL ) {
        return retv;
    }

    int shift=0;
    int n = menu( list->entries, input, list->prompt, NULL, &shift,token_match, NULL );

    if ( n == -2 ) {
        retv = JSON_DIALOG;
    } else if ( n >=0 && list->commands[n] != NULL ) {
        exec_json( list->commands[n], list->execute_in_term);
    }

    for ( unsigned int i=0; i < list->num_entries; i++ ) {
        free( list->entries[i] );
        free( list->commands[i] );
    }

    if(list->entries)free( list->entries );
    if(list->commands)free( list->commands );
    if(list->prompt)free( list->prompt );

    return retv;
}