Rework make_usage to print the usage message immediately

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Alex Riesen 2007-10-14 00:10:51 +02:00 коммит произвёл Junio C Hamano
Родитель beb4743793
Коммит f389c808b6
1 изменённых файлов: 22 добавлений и 25 удалений

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@ -1,6 +1,5 @@
#include "git-compat-util.h"
#include "parse-options.h"
#include "strbuf.h"
#define OPT_SHORT 1
#define OPT_UNSET 2
@ -172,59 +171,57 @@ int parse_options(int argc, const char **argv, const struct option *options,
void usage_with_options(const char * const *usagestr,
const struct option *opts)
{
struct strbuf sb;
strbuf_init(&sb, 4096);
strbuf_addstr(&sb, *usagestr);
strbuf_addch(&sb, '\n');
while (*++usagestr)
strbuf_addf(&sb, " %s\n", *usagestr);
fprintf(stderr, "usage: %s\n", *usagestr++);
while (*usagestr && **usagestr)
fprintf(stderr, " or: %s\n", *usagestr++);
while (*usagestr)
fprintf(stderr, " %s\n", *usagestr++);
if (opts->type != OPTION_GROUP)
strbuf_addch(&sb, '\n');
fputc('\n', stderr);
for (; opts->type != OPTION_END; opts++) {
size_t pos;
int pad;
if (opts->type == OPTION_GROUP) {
strbuf_addch(&sb, '\n');
fputc('\n', stderr);
if (*opts->help)
strbuf_addf(&sb, "%s\n", opts->help);
fprintf(stderr, "%s\n", opts->help);
continue;
}
pos = sb.len;
strbuf_addstr(&sb, " ");
pos = fprintf(stderr, " ");
if (opts->short_name)
strbuf_addf(&sb, "-%c", opts->short_name);
pos += fprintf(stderr, "-%c", opts->short_name);
if (opts->long_name && opts->short_name)
strbuf_addstr(&sb, ", ");
pos += fprintf(stderr, ", ");
if (opts->long_name)
strbuf_addf(&sb, "--%s", opts->long_name);
pos += fprintf(stderr, "--%s", opts->long_name);
switch (opts->type) {
case OPTION_INTEGER:
strbuf_addstr(&sb, " <n>");
pos += fprintf(stderr, " <n>");
break;
case OPTION_STRING:
if (opts->argh)
strbuf_addf(&sb, " <%s>", opts->argh);
pos += fprintf(stderr, " <%s>", opts->argh);
else
strbuf_addstr(&sb, " ...");
pos += fprintf(stderr, " ...");
break;
default:
break;
}
pad = sb.len - pos;
if (pad <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pad;
if (pos <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pos;
else {
strbuf_addch(&sb, '\n');
fputc('\n', stderr);
pad = USAGE_OPTS_WIDTH;
}
strbuf_addf(&sb, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
}
usage(sb.buf);
fputc('\n', stderr);
exit(129);
}