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parse-options: factor out usage_indent() and usage_padding()

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Extract functions for printing spaces before and after options.  We'll
need them in the next commit.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe
2023-08-05 16:43:04 +02:00
committed by Junio C Hamano
parent e8e5d294dc
commit 652a6b15bc
1 changed files with 24 additions and 15 deletions
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39
parse-options.c
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@ -1020,9 +1020,28 @@ static int usage_argh(const struct option *opts, FILE *outfile)
return utf8_fprintf(outfile, s, opts->argh ? _(opts->argh) : _("..."));
}
static int usage_indent(FILE *outfile)
{
return fprintf(outfile, " ");
}
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
static void usage_padding(FILE *outfile, size_t pos)
{
int pad;
if (pos == USAGE_OPTS_WIDTH + 1)
pad = -1;
else if (pos <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pos;
else {
fputc('\n', outfile);
pad = USAGE_OPTS_WIDTH;
}
fprintf(outfile, "%*s", pad + USAGE_GAP, "");
}
static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t *ctx,
const char * const *usagestr,
const struct option *opts,
@ -1108,7 +1127,6 @@ static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t
for (; opts->type != OPTION_END; opts++) {
size_t pos;
int pad;
const char *cp, *np;
if (opts->type == OPTION_SUBCOMMAND)
@ -1128,7 +1146,7 @@ static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t
need_newline = 0;
}
pos = fprintf(outfile, " ");
pos = usage_indent(outfile);
if (opts->short_name) {
if (opts->flags & PARSE_OPT_NODASH)
pos += fprintf(outfile, "%c", opts->short_name);
@ -1152,16 +1170,8 @@ static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t
!(opts->flags & PARSE_OPT_NOARG))
pos += usage_argh(opts, outfile);
if (pos == USAGE_OPTS_WIDTH + 1)
pad = -1;
else if (pos <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pos;
else {
fputc('\n', outfile);
pad = USAGE_OPTS_WIDTH;
}
if (opts->type == OPTION_ALIAS) {
fprintf(outfile, "%*s", pad + USAGE_GAP, "");
usage_padding(outfile, pos);
fprintf_ln(outfile, _("alias of --%s"),
(const char *)opts->value);
continue;
@ -1169,12 +1179,11 @@ static enum parse_opt_result usage_with_options_internal(struct parse_opt_ctx_t
for (cp = _(opts->help); *cp; cp = np) {
np = strchrnul(cp, '\n');
fprintf(outfile,
"%*s%.*s\n", pad + USAGE_GAP, "",
(int)(np - cp), cp);
usage_padding(outfile, pos);
fprintf(outfile, "%.*s\n", (int)(np - cp), cp);
if (*np)
np++;
pad = USAGE_OPTS_WIDTH;
pos = 0;
}
}
fputc('\n', outfile);