/* * GIT - The information manager from hell * * Copyright (C) Linus Torvalds, 2005 */ #include "cache.h" #include "commit.h" #include "tree.h" #include "builtin.h" #include "utf8.h" #define BLOCKING (1ul << 14) /* * FIXME! Share the code with "write-tree.c" */ static void init_buffer(char **bufp, unsigned int *sizep) { *bufp = xmalloc(BLOCKING); *sizep = 0; } static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...) { char one_line[2048]; va_list args; int len; unsigned long alloc, size, newsize; char *buf; va_start(args, fmt); len = vsnprintf(one_line, sizeof(one_line), fmt, args); va_end(args); size = *sizep; newsize = size + len + 1; alloc = (size + 32767) & ~32767; buf = *bufp; if (newsize > alloc) { alloc = (newsize + 32767) & ~32767; buf = xrealloc(buf, alloc); *bufp = buf; } *sizep = newsize - 1; memcpy(buf + size, one_line, len); } static void check_valid(unsigned char *sha1, enum object_type expect) { enum object_type type = sha1_object_info(sha1, NULL); if (type < 0) die("%s is not a valid object", sha1_to_hex(sha1)); if (type != expect) die("%s is not a valid '%s' object", sha1_to_hex(sha1), typename(expect)); } /* * Having more than two parents is not strange at all, and this is * how multi-way merges are represented. */ #define MAXPARENT (16) static unsigned char parent_sha1[MAXPARENT][20]; static const char commit_tree_usage[] = "git-commit-tree <sha1> [-p <sha1>]* < changelog"; static int new_parent(int idx) { int i; unsigned char *sha1 = parent_sha1[idx]; for (i = 0; i < idx; i++) { if (!hashcmp(parent_sha1[i], sha1)) { error("duplicate parent %s ignored", sha1_to_hex(sha1)); return 0; } } return 1; } static const char commit_utf8_warn[] = "Warning: commit message does not conform to UTF-8.\n" "You may want to amend it after fixing the message, or set the config\n" "variable i18n.commitencoding to the encoding your project uses.\n"; int cmd_commit_tree(int argc, const char **argv, const char *prefix) { int i; int parents = 0; unsigned char tree_sha1[20]; unsigned char commit_sha1[20]; char comment[1000]; char *buffer; unsigned int size; int encoding_is_utf8; git_config(git_default_config); if (argc < 2) usage(commit_tree_usage); if (get_sha1(argv[1], tree_sha1)) die("Not a valid object name %s", argv[1]); check_valid(tree_sha1, OBJ_TREE); for (i = 2; i < argc; i += 2) { const char *a, *b; a = argv[i]; b = argv[i+1]; if (!b || strcmp(a, "-p")) usage(commit_tree_usage); if (parents >= MAXPARENT) die("Too many parents (%d max)", MAXPARENT); if (get_sha1(b, parent_sha1[parents])) die("Not a valid object name %s", b); check_valid(parent_sha1[parents], OBJ_COMMIT); if (new_parent(parents)) parents++; } /* Not having i18n.commitencoding is the same as having utf-8 */ encoding_is_utf8 = is_encoding_utf8(git_commit_encoding); init_buffer(&buffer, &size); add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1)); /* * NOTE! This ordering means that the same exact tree merged with a * different order of parents will be a _different_ changeset even * if everything else stays the same. */ for (i = 0; i < parents; i++) add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i])); /* Person/date information */ add_buffer(&buffer, &size, "author %s\n", git_author_info(1)); add_buffer(&buffer, &size, "committer %s\n", git_committer_info(1)); if (!encoding_is_utf8) add_buffer(&buffer, &size, "encoding %s\n", git_commit_encoding); add_buffer(&buffer, &size, "\n"); /* And add the comment */ while (fgets(comment, sizeof(comment), stdin) != NULL) add_buffer(&buffer, &size, "%s", comment); /* And check the encoding */ buffer[size] = '\0'; if (encoding_is_utf8 && !is_utf8(buffer)) fprintf(stderr, commit_utf8_warn); if (!write_sha1_file(buffer, size, commit_type, commit_sha1)) { printf("%s\n", sha1_to_hex(commit_sha1)); return 0; } else return 1; }