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7ccc94ff45
The expansion returned from strbuf_check_branch_ref always starts with
"refs/heads/" by construction, but there is nothing about its name or
advertised API making that obvious. This command is used to process
human-supplied input from the command line and is usually not the
inner loop, so we can spare some cycles to be more defensive. Instead
of hard-coding the offset strlen("refs/heads/") to skip, verify that
the expansion actually starts with refs/heads/.
[jn: split out from a larger patch, added explanation]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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* GIT - The information manager from hell
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*/
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#include "cache.h"
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#include "refs.h"
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#include "builtin.h"
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#include "strbuf.h"
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static const char builtin_check_ref_format_usage[] =
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"git check-ref-format [--normalize] [<options>] <refname>\n"
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" or: git check-ref-format --branch <branchname-shorthand>";
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/*
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* Return a copy of refname but with leading slashes removed and runs
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* of adjacent slashes replaced with single slashes.
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*
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* This function is similar to normalize_path_copy(), but stripped down
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* to meet check_ref_format's simpler needs.
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*/
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static char *collapse_slashes(const char *refname)
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{
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char *ret = xmallocz(strlen(refname));
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char ch;
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char prev = '/';
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char *cp = ret;
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while ((ch = *refname++) != '\0') {
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if (prev == '/' && ch == prev)
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continue;
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*cp++ = ch;
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prev = ch;
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}
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*cp = '\0';
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return ret;
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}
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static int check_ref_format_branch(const char *arg)
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{
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struct strbuf sb = STRBUF_INIT;
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const char *name;
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int nongit;
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setup_git_directory_gently(&nongit);
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if (strbuf_check_branch_ref(&sb, arg) ||
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!skip_prefix(sb.buf, "refs/heads/", &name))
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die("'%s' is not a valid branch name", arg);
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printf("%s\n", name);
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return 0;
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}
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int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
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{
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int i;
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int normalize = 0;
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int flags = 0;
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const char *refname;
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if (argc == 2 && !strcmp(argv[1], "-h"))
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usage(builtin_check_ref_format_usage);
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if (argc == 3 && !strcmp(argv[1], "--branch"))
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return check_ref_format_branch(argv[2]);
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for (i = 1; i < argc && argv[i][0] == '-'; i++) {
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if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
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normalize = 1;
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else if (!strcmp(argv[i], "--allow-onelevel"))
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flags |= REFNAME_ALLOW_ONELEVEL;
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else if (!strcmp(argv[i], "--no-allow-onelevel"))
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flags &= ~REFNAME_ALLOW_ONELEVEL;
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else if (!strcmp(argv[i], "--refspec-pattern"))
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flags |= REFNAME_REFSPEC_PATTERN;
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else
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usage(builtin_check_ref_format_usage);
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}
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if (! (i == argc - 1))
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usage(builtin_check_ref_format_usage);
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refname = argv[i];
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if (normalize)
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refname = collapse_slashes(refname);
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if (check_refname_format(refname, flags))
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return 1;
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if (normalize)
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printf("%s\n", refname);
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return 0;
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}
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