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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "options.h"
struct options parse_options(int argc, char **argv) {
size_t filters_cap = 32, filters_len = 0;
struct filter_rule *filters = malloc(filters_cap * sizeof(struct filter_rule));
size_t cachetags_cap = 32, cachetags_len = 0;
char **cachetags = malloc(cachetags_cap * sizeof(char*));
char *rootpath = NULL;
int print_depth = 1;
bool debug = false;
for (int i = 1; i < argc; i++) {
if (argv[i][0] != '-') {
if (rootpath) {
fprintf(stderr, "Multiple root paths given\n");
exit(1);
}
rootpath = strdup(argv[i]);
} else if (strcmp(argv[i], "--exclude") == 0) {
if (i + 1 >= argc) {
fprintf(stderr, "'--exclude' takes an argument\n");
exit(1);
}
if (filters_len >= filters_cap) {
filters_cap *= 2;
filters = realloc(filters, filters_cap * sizeof(struct filter_rule));
}
struct filter_rule rule = parse_exclude_rule(argv[i+1]);
filters[filters_len++] = rule;
i++;
} else if (strcmp(argv[i], "--exclude-if-present") == 0) {
if (i + 1 >= argc) {
fprintf(stderr, "'--exclude-if-present' takes an argument\n");
exit(1);
}
if (cachetags_len >= cachetags_cap) {
cachetags_cap *= 2;
cachetags = realloc(cachetags, cachetags_cap * sizeof(char*));
}
cachetags[cachetags_len++] = strdup(argv[i+1]);
i++;
} else if (strcmp(argv[i], "-d") == 0) {
if (i + 1 >= argc) {
fprintf(stderr, "'-d' takes an argument\n");
exit(1);
}
char *endp;
print_depth = strtol(argv[i+1], &endp, 10);
if (!*argv[i+1] || *endp) {
fprintf(stderr, "Invalid argument to '-d': '%s'\n", argv[i+1]);
exit(1);
}
i++;
} else if (strcmp(argv[i], "--debug") == 0) {
debug = true;
} else {
fprintf(stderr, "Unrecognised argument: '%s'\n", argv[i]);
exit(1);
}
}
if (rootpath == NULL) {
fprintf(stderr, "No root path provided\n");
exit(1);
}
return (struct options){
.nfilters = filters_len,
.filters = filters,
.ncachetags = cachetags_len,
.cachetags = cachetags,
.rootpath = rootpath,
.print_depth = print_depth,
.debug = debug,
};
}
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