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dbd0f5c769
When running "git commit -F file" and "git tag -F file" from a subdirectory, we should take it as relative to the directory we started from, not relative to the top-level directory. This adds a helper function "parse_options_fix_filename()" to make it more convenient to fix this class of issues. Ideally, parse_options() should support a new type of option, "OPT_FILENAME", to do this uniformly, but this patch is meant to go to 'maint' to fix it minimally. One thing to note is that value for "commit template file" that comes from the command line is taken as relative to $cwd just like other parameters, but when it comes from the configuration varilable 'commit.template', it is taken as relative to the working tree root as before. I think this difference actually is sensible (not that I particularly think commit.template itself is sensible). Signed-off-by: Junio C Hamano <gitster@pobox.com>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
#ifndef PARSE_OPTIONS_H
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#define PARSE_OPTIONS_H
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enum parse_opt_type {
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/* special types */
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OPTION_END,
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OPTION_ARGUMENT,
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OPTION_GROUP,
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/* options with no arguments */
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OPTION_BIT,
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OPTION_BOOLEAN, /* _INCR would have been a better name */
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OPTION_SET_INT,
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OPTION_SET_PTR,
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/* options with arguments (usually) */
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OPTION_STRING,
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OPTION_INTEGER,
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OPTION_CALLBACK,
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};
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enum parse_opt_flags {
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PARSE_OPT_KEEP_DASHDASH = 1,
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PARSE_OPT_STOP_AT_NON_OPTION = 2,
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};
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enum parse_opt_option_flags {
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PARSE_OPT_OPTARG = 1,
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PARSE_OPT_NOARG = 2,
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PARSE_OPT_NONEG = 4,
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PARSE_OPT_HIDDEN = 8,
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};
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struct option;
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typedef int parse_opt_cb(const struct option *, const char *arg, int unset);
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/*
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* `type`::
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* holds the type of the option, you must have an OPTION_END last in your
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* array.
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*
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* `short_name`::
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* the character to use as a short option name, '\0' if none.
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*
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* `long_name`::
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* the long option name, without the leading dashes, NULL if none.
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*
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* `value`::
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* stores pointers to the values to be filled.
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*
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* `argh`::
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* token to explain the kind of argument this option wants. Keep it
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* homogenous across the repository.
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*
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* `help`::
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* the short help associated to what the option does.
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* Must never be NULL (except for OPTION_END).
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* OPTION_GROUP uses this pointer to store the group header.
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*
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* `flags`::
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* mask of parse_opt_option_flags.
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* PARSE_OPT_OPTARG: says that the argument is optionnal (not for BOOLEANs)
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* PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs
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* PARSE_OPT_NONEG: says that this option cannot be negated
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* PARSE_OPT_HIDDEN this option is skipped in the default usage, showed in
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* the long one.
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*
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* `callback`::
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* pointer to the callback to use for OPTION_CALLBACK.
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*
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* `defval`::
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* default value to fill (*->value) with for PARSE_OPT_OPTARG.
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* OPTION_{BIT,SET_INT,SET_PTR} store the {mask,integer,pointer} to put in
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* the value when met.
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* CALLBACKS can use it like they want.
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*/
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struct option {
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enum parse_opt_type type;
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int short_name;
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const char *long_name;
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void *value;
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const char *argh;
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const char *help;
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int flags;
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parse_opt_cb *callback;
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intptr_t defval;
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};
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#define OPT_END() { OPTION_END }
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#define OPT_ARGUMENT(l, h) { OPTION_ARGUMENT, 0, (l), NULL, NULL, (h) }
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#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
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#define OPT_BIT(s, l, v, h, b) { OPTION_BIT, (s), (l), (v), NULL, (h), 0, NULL, (b) }
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#define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
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#define OPT_SET_INT(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, (h), 0, NULL, (i) }
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#define OPT_SET_PTR(s, l, v, h, p) { OPTION_SET_PTR, (s), (l), (v), NULL, (h), 0, NULL, (p) }
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#define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), NULL, (h) }
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#define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v), (a), (h) }
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#define OPT_DATE(s, l, v, h) \
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{ OPTION_CALLBACK, (s), (l), (v), "time",(h), 0, \
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parse_opt_approxidate_cb }
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#define OPT_CALLBACK(s, l, v, a, h, f) \
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{ OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
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/* parse_options() will filter out the processed options and leave the
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* non-option argments in argv[].
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* Returns the number of arguments left in argv[].
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*/
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extern int parse_options(int argc, const char **argv,
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const struct option *options,
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const char * const usagestr[], int flags);
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extern NORETURN void usage_with_options(const char * const *usagestr,
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const struct option *options);
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/*----- some often used options -----*/
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extern int parse_opt_abbrev_cb(const struct option *, const char *, int);
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extern int parse_opt_approxidate_cb(const struct option *, const char *, int);
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#define OPT__VERBOSE(var) OPT_BOOLEAN('v', "verbose", (var), "be verbose")
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#define OPT__QUIET(var) OPT_BOOLEAN('q', "quiet", (var), "be quiet")
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#define OPT__DRY_RUN(var) OPT_BOOLEAN('n', "dry-run", (var), "dry run")
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#define OPT__ABBREV(var) \
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{ OPTION_CALLBACK, 0, "abbrev", (var), "n", \
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"use <n> digits to display SHA-1s", \
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PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 }
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extern const char *parse_options_fix_filename(const char *prefix, const char *file);
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#endif
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