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https://github.com/git/git.git
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9ae144fbf2
This simplifies a bit the next patch, since it will have more than one condition to exit the loop. Signed-off-by: Paolo Bonzini <bonzini@gnu.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
99 lines
1.8 KiB
C
99 lines
1.8 KiB
C
#include "cache.h"
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#include "exec_cmd.h"
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static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c)
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{
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unsigned char result[20];
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char name[50];
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if (!patchlen)
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return;
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git_SHA1_Final(result, c);
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memcpy(name, sha1_to_hex(id), 41);
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printf("%s %s\n", sha1_to_hex(result), name);
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git_SHA1_Init(c);
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}
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static int remove_space(char *line)
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{
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char *src = line;
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char *dst = line;
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unsigned char c;
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while ((c = *src++) != '\0') {
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if (!isspace(c))
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*dst++ = c;
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}
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return dst - line;
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}
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int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx)
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{
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static char line[1000];
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int patchlen = 0, found_next = 0;
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while (fgets(line, sizeof(line), stdin) != NULL) {
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char *p = line;
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int len;
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if (!memcmp(line, "diff-tree ", 10))
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p += 10;
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else if (!memcmp(line, "commit ", 7))
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p += 7;
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if (!get_sha1_hex(p, next_sha1)) {
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found_next = 1;
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break;
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}
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/* Ignore commit comments */
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if (!patchlen && memcmp(line, "diff ", 5))
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continue;
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/* Ignore git-diff index header */
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if (!memcmp(line, "index ", 6))
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continue;
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/* Ignore line numbers when computing the SHA1 of the patch */
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if (!memcmp(line, "@@ -", 4))
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continue;
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/* Compute the sha without whitespace */
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len = remove_space(line);
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patchlen += len;
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git_SHA1_Update(ctx, line, len);
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}
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if (!found_next)
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hashclr(next_sha1);
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return patchlen;
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}
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static void generate_id_list(void)
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{
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unsigned char sha1[20], n[20];
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git_SHA_CTX ctx;
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int patchlen;
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git_SHA1_Init(&ctx);
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hashclr(sha1);
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while (!feof(stdin)) {
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patchlen = get_one_patchid(n, &ctx);
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flush_current_id(patchlen, sha1, &ctx);
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hashcpy(sha1, n);
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}
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}
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static const char patch_id_usage[] = "git patch-id < patch";
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int cmd_patch_id(int argc, const char **argv, const char *prefix)
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{
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if (argc != 1)
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usage(patch_id_usage);
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generate_id_list();
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return 0;
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}
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