dav/sopt.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2018 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "sopt.h"

#include <cx/hash_map.h>

void cmd_args_free(CmdArgs *args) {
    if(args) {
        cxMapDestroy(args->options);
        free(args->argv);
        free(args);
    }
}

static void cmd_map_put(CxMap *map, const char *key, const void *value) {
    cxMapPut(map, key, (void*)value);
}

CmdArgs* cmd_parse_args(int argc, char **argv) {
    CmdArgs *a = malloc(sizeof(CmdArgs));
    a->options = cxHashMapCreate(cxDefaultAllocator, CX_STORE_POINTERS, 16);
    a->argv = calloc(argc, sizeof(char*));
    a->argc = 0;
    
    const char *NOARG = "";
    
    char *option = NULL;
    char optchar = 0;
    for(int i=0;i<argc;i++) {
        char *arg = argv[i];
        size_t len = strlen(arg);
        if(len > 1 && arg[0] == '-') {
            for(int c=1;c<len;c++) {
                switch(arg[c]) {
                    default: {
                        fprintf(stderr, "Unknown option -%c\n\n", arg[c]);
                        cmd_args_free(a);
                        return NULL;
                    }
                    case 'c': {
                        cmd_map_put(a->options, "conflict", NOARG);
                        break;
                    }
                    case 'l': {
                        cmd_map_put(a->options, "lock", NOARG);
                        break;
                    }
                    case 'd': {
                        cmd_map_put(a->options, "nolock", NOARG);
                        break;
                    }
                    case 'r': {
                        cmd_map_put(a->options, "remove", NOARG);
                        break;
                    }
                    case 'v': {
                        cmd_map_put(a->options, "verbose", NOARG);
                        break;
                    }
                    case 's': {
                        option = "syncdir";
                        optchar = 's';
                        break;
                    }
                    case 't': {
                        option = "tags";
                        optchar = 't';
                        break;
                    }
                    case 'V': {
                        option = "version";
                        optchar = 'V';
                        break;
                    }
                    case 'R': {
                        cmd_map_put(a->options, "restore-removed", NOARG);
                        break;
                    }
                    case 'M': {
                        cmd_map_put(a->options, "restore-modified", NOARG);
                        break;
                    }
                    case 'S': {
                        cmd_map_put(a->options, "snapshot", NOARG);
                    }
                }
            }
        } else if(option) {
            cmd_map_put(a->options, option, arg);
            option = NULL;
        } else {
            a->argv[a->argc++] = arg;
        }
    }
    
    return a;
}

char* cmd_getoption(CmdArgs *arg, const char *name) {
    return cxMapGet(arg->options, cx_hash_key_str(name));
}