root/builtin/stripspace.c

DEFINITIONS

1. comment_lines
2. cmd_stripspace

#include "builtin.h"
#include "cache.h"
#include "parse-options.h"
#include "strbuf.h"

static void comment_lines(struct strbuf *buf)
{
        char *msg;
        size_t len;

        msg = strbuf_detach(buf, &len);
        strbuf_add_commented_lines(buf, msg, len);
        free(msg);
}

static const char * const stripspace_usage[] = {
        N_("git stripspace [-s | --strip-comments]"),
        N_("git stripspace [-c | --comment-lines]"),
        NULL
};

enum stripspace_mode {
        STRIP_DEFAULT = 0,
        STRIP_COMMENTS,
        COMMENT_LINES
};

int cmd_stripspace(int argc, const char **argv, const char *prefix)
{
        struct strbuf buf = STRBUF_INIT;
        enum stripspace_mode mode = STRIP_DEFAULT;

        const struct option options[] = {
                OPT_CMDMODE('s', "strip-comments", &mode,
                            N_("skip and remove all lines starting with comment character"),
                            STRIP_COMMENTS),
                OPT_CMDMODE('c', "comment-lines", &mode,
                            N_("prepend comment character and blank to each line"),
                            COMMENT_LINES),
                OPT_END()
        };

        argc = parse_options(argc, argv, prefix, options, stripspace_usage, 0);
        if (argc)
                usage_with_options(stripspace_usage, options);

        if (mode == STRIP_COMMENTS || mode == COMMENT_LINES)
                git_config(git_default_config, NULL);

        if (strbuf_read(&buf, 0, 1024) < 0)
                die_errno("could not read the input");

        if (mode == STRIP_DEFAULT || mode == STRIP_COMMENTS)
                strbuf_stripspace(&buf, mode == STRIP_COMMENTS);
        else
                comment_lines(&buf);

        write_or_die(1, buf.buf, buf.len);
        strbuf_release(&buf);
        return 0;
}