Andrew's git - gitweb.git/blob - t/helper/test-parse-options.c

   1#include "cache.h"
   2#include "parse-options.h"
   3#include "string-list.h"
   4
   5static int boolean = 0;
   6static int integer = 0;
   7static unsigned long magnitude = 0;
   8static timestamp_t timestamp;
   9static int abbrev = 7;
  10static int verbose = -1; /* unspecified */
  11static int dry_run = 0, quiet = 0;
  12static char *string = NULL;
  13static char *file = NULL;
  14static int ambiguous;
  15static struct string_list list = STRING_LIST_INIT_NODUP;
  16
  17static struct {
  18        int called;
  19        const char *arg;
  20        int unset;
  21} length_cb;
  22
  23static int length_callback(const struct option *opt, const char *arg, int unset)
  24{
  25        length_cb.called = 1;
  26        length_cb.arg = arg;
  27        length_cb.unset = unset;
  28
  29        if (unset)
  30                return 1; /* do not support unset */
  31
  32        *(int *)opt->value = strlen(arg);
  33        return 0;
  34}
  35
  36static int number_callback(const struct option *opt, const char *arg, int unset)
  37{
  38        *(int *)opt->value = strtol(arg, NULL, 10);
  39        return 0;
  40}
  41
  42static int collect_expect(const struct option *opt, const char *arg, int unset)
  43{
  44        struct string_list *expect;
  45        struct string_list_item *item;
  46        struct strbuf label = STRBUF_INIT;
  47        const char *colon;
  48
  49        if (!arg || unset)
  50                die("malformed --expect option");
  51
  52        expect = (struct string_list *)opt->value;
  53        colon = strchr(arg, ':');
  54        if (!colon)
  55                die("malformed --expect option, lacking a colon");
  56        strbuf_add(&label, arg, colon - arg);
  57        item = string_list_insert(expect, strbuf_detach(&label, NULL));
  58        if (item->util)
  59                die("malformed --expect option, duplicate %s", label.buf);
  60        item->util = (void *)arg;
  61        return 0;
  62}
  63
  64__attribute__((format (printf,3,4)))
  65static void show(struct string_list *expect, int *status, const char *fmt, ...)
  66{
  67        struct string_list_item *item;
  68        struct strbuf buf = STRBUF_INIT;
  69        va_list args;
  70
  71        va_start(args, fmt);
  72        strbuf_vaddf(&buf, fmt, args);
  73        va_end(args);
  74
  75        if (!expect->nr)
  76                printf("%s\n", buf.buf);
  77        else {
  78                char *colon = strchr(buf.buf, ':');
  79                if (!colon)
  80                        die("malformed output format, output lacking colon: %s", fmt);
  81                *colon = '\0';
  82                item = string_list_lookup(expect, buf.buf);
  83                *colon = ':';
  84                if (!item)
  85                        ; /* not among entries being checked */
  86                else {
  87                        if (strcmp((const char *)item->util, buf.buf)) {
  88                                printf("-%s\n", (char *)item->util);
  89                                printf("+%s\n", buf.buf);
  90                                *status = 1;
  91                        }
  92                }
  93        }
  94        strbuf_release(&buf);
  95}
  96
  97int cmd_main(int argc, const char **argv)
  98{
  99        const char *prefix = "prefix/";
 100        const char *usage[] = {
 101                "test-parse-options <options>",
 102                "",
 103                "A helper function for the parse-options API.",
 104                NULL
 105        };
 106        struct string_list expect = STRING_LIST_INIT_NODUP;
 107        struct option options[] = {
 108                OPT_BOOL(0, "yes", &boolean, "get a boolean"),
 109                OPT_BOOL('D', "no-doubt", &boolean, "begins with 'no-'"),
 110                { OPTION_SET_INT, 'B', "no-fear", &boolean, NULL,
 111                  "be brave", PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1 },
 112                OPT_COUNTUP('b', "boolean", &boolean, "increment by one"),
 113                OPT_BIT('4', "or4", &boolean,
 114                        "bitwise-or boolean with ...0100", 4),
 115                OPT_NEGBIT(0, "neg-or4", &boolean, "same as --no-or4", 4),
 116                OPT_GROUP(""),
 117                OPT_INTEGER('i', "integer", &integer, "get a integer"),
 118                OPT_INTEGER('j', NULL, &integer, "get a integer, too"),
 119                OPT_MAGNITUDE('m', "magnitude", &magnitude, "get a magnitude"),
 120                OPT_SET_INT(0, "set23", &integer, "set integer to 23", 23),
 121                OPT_DATE('t', NULL, &timestamp, "get timestamp of <time>"),
 122                OPT_CALLBACK('L', "length", &integer, "str",
 123                        "get length of <str>", length_callback),
 124                OPT_FILENAME('F', "file", &file, "set file to <file>"),
 125                OPT_GROUP("String options"),
 126                OPT_STRING('s', "string", &string, "string", "get a string"),
 127                OPT_STRING(0, "string2", &string, "str", "get another string"),
 128                OPT_STRING(0, "st", &string, "st", "get another string (pervert ordering)"),
 129                OPT_STRING('o', NULL, &string, "str", "get another string"),
 130                OPT_NOOP_NOARG(0, "obsolete"),
 131                OPT_STRING_LIST(0, "list", &list, "str", "add str to list"),
 132                OPT_GROUP("Magic arguments"),
 133                OPT_ARGUMENT("quux", "means --quux"),
 134                OPT_NUMBER_CALLBACK(&integer, "set integer to NUM",
 135                        number_callback),
 136                { OPTION_COUNTUP, '+', NULL, &boolean, NULL, "same as -b",
 137                  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH },
 138                { OPTION_COUNTUP, 0, "ambiguous", &ambiguous, NULL,
 139                  "positive ambiguity", PARSE_OPT_NOARG | PARSE_OPT_NONEG },
 140                { OPTION_COUNTUP, 0, "no-ambiguous", &ambiguous, NULL,
 141                  "negative ambiguity", PARSE_OPT_NOARG | PARSE_OPT_NONEG },
 142                OPT_GROUP("Standard options"),
 143                OPT__ABBREV(&abbrev),
 144                OPT__VERBOSE(&verbose, "be verbose"),
 145                OPT__DRY_RUN(&dry_run, "dry run"),
 146                OPT__QUIET(&quiet, "be quiet"),
 147                OPT_CALLBACK(0, "expect", &expect, "string",
 148                             "expected output in the variable dump",
 149                             collect_expect),
 150                OPT_END(),
 151        };
 152        int i;
 153        int ret = 0;
 154
 155        argc = parse_options(argc, (const char **)argv, prefix, options, usage, 0);
 156
 157        if (length_cb.called) {
 158                const char *arg = length_cb.arg;
 159                int unset = length_cb.unset;
 160                show(&expect, &ret, "Callback: \"%s\", %d",
 161                     (arg ? arg : "not set"), unset);
 162        }
 163        show(&expect, &ret, "boolean: %d", boolean);
 164        show(&expect, &ret, "integer: %d", integer);
 165        show(&expect, &ret, "magnitude: %lu", magnitude);
 166        show(&expect, &ret, "timestamp: %"PRItime, timestamp);
 167        show(&expect, &ret, "string: %s", string ? string : "(not set)");
 168        show(&expect, &ret, "abbrev: %d", abbrev);
 169        show(&expect, &ret, "verbose: %d", verbose);
 170        show(&expect, &ret, "quiet: %d", quiet);
 171        show(&expect, &ret, "dry run: %s", dry_run ? "yes" : "no");
 172        show(&expect, &ret, "file: %s", file ? file : "(not set)");
 173
 174        for (i = 0; i < list.nr; i++)
 175                show(&expect, &ret, "list: %s", list.items[i].string);
 176
 177        for (i = 0; i < argc; i++)
 178                show(&expect, &ret, "arg %02d: %s", i, argv[i]);
 179
 180        return ret;
 181}