/**
 * Interactive Clean
 *
 * C functions to compile and run a Clean module
 *
 * The MIT License (MIT)
 * 
 * Copyright (c) 2015 Camil Staps <info@camilstaps.nl>
 * 
 * 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.
 */
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include "Clean.h"

/**
 * Compile a Clean module in a path
 *
 * This may fail (hard) when out of memory
 * clm should be in $PATH
 *
 * @param CleanString path the path
 * @param CleanString module the module
 *
 * @return int the result of clm
 */
int64_t compile(CleanString path, CleanString module) {
    char* pathchars, * modulechars;
    int pathlength, modulelength;

    // Copy from CleanString to normal char[]
    pathlength = CleanStringLength(path);
    modulelength = CleanStringLength(module);

    pathchars = calloc(sizeof(char), pathlength + 1);
    modulechars = calloc(sizeof(char), pathlength + 1);
    if (modulechars == NULL || pathchars == NULL) {
        printf("Couldn't allocate memory\n");
        exit(-1);
    }

    int i;
    for (i=0;i<modulelength;i++)
        modulechars[i] = CleanStringCharacters(module)[i];
    modulechars[i] = 0x00;

    for (i=0;i<pathlength;i++)
        pathchars[i] = CleanStringCharacters(path)[i];
    pathchars[i] = 0x00;
    
    // cd to <path>
    chdir(pathchars);

    // Build command:
    // clm -ms <module> -o <module>
    char cmd[64] = "clm -ms -nw ";
    strcat(cmd, modulechars);
    strcat(cmd, " -o ");
    strcat(cmd, modulechars);

    // Call clm
    return system(cmd);
}

/**
 * Run an executable
 *
 * This may fail when out of memory, or when the executable fails
 * The file should be executable by the user
 *
 * @param CleanString executable the path to the executable
 *
 * @return void
 */
void run(CleanString executable) {
    char* execchars;
    int execlength;

    // Copy CleanString to char[]
    execlength = CleanStringLength(executable);

    execchars = calloc(sizeof(char), execlength + 1 + 4);
    if (execchars == NULL) {
        printf("Couldn't allocate memory\n");
        exit(-1);
    }

    int i;
    for (i=0;i<execlength;i++)
        execchars[i] = CleanStringCharacters(executable)[i];
    execchars[i] = 0x00;

    // Build & run command:
    // <module> -nt
    strcat(execchars, " -nt");
    system(execchars);
}