diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | apply.c | 298 | ||||
| -rw-r--r-- | base85.c | 140 | ||||
| -rw-r--r-- | cache.h | 4 | ||||
| -rw-r--r-- | diff.c | 114 | ||||
| -rw-r--r-- | diff.h | 1 | ||||
| -rwxr-xr-x | t/t4012-diff-binary.sh | 85 | ||||
| -rw-r--r-- | t/test4012.png | bin | 0 -> 5660 bytes |
8 files changed, 575 insertions, 69 deletions
@@ -205,7 +205,7 @@ DIFF_OBJS = \ diffcore-delta.o log-tree.o LIB_OBJS = \ - blob.o commit.o connect.o csum-file.o \ + blob.o commit.o connect.o csum-file.o base85.o \ date.o diff-delta.o entry.o exec_cmd.o ident.o index.o \ object.o pack-check.o patch-delta.o path.o pkt-line.o \ quote.o read-cache.o refs.o run-command.o \ @@ -10,6 +10,7 @@ #include "cache.h" #include "quote.h" #include "blob.h" +#include "delta.h" // --check turns on checking that the working tree matches the // files that are being modified, but doesn't apply the patch @@ -114,6 +115,9 @@ struct patch { char *new_name, *old_name, *def_name; unsigned int old_mode, new_mode; int is_rename, is_copy, is_new, is_delete, is_binary; +#define BINARY_DELTA_DEFLATED 1 +#define BINARY_LITERAL_DEFLATED 2 + unsigned long deflate_origlen; int lines_added, lines_deleted; int score; struct fragment *fragments; @@ -967,6 +971,88 @@ static inline int metadata_changes(struct patch *patch) patch->old_mode != patch->new_mode); } +static int parse_binary(char *buffer, unsigned long size, struct patch *patch) +{ + /* We have read "GIT binary patch\n"; what follows is a line + * that says the patch method (currently, either "deflated + * literal" or "deflated delta") and the length of data before + * deflating; a sequence of 'length-byte' followed by base-85 + * encoded data follows. + * + * Each 5-byte sequence of base-85 encodes up to 4 bytes, + * and we would limit the patch line to 66 characters, + * so one line can fit up to 13 groups that would decode + * to 52 bytes max. The length byte 'A'-'Z' corresponds + * to 1-26 bytes, and 'a'-'z' corresponds to 27-52 bytes. + * The end of binary is signalled with an empty line. + */ + int llen, used; + struct fragment *fragment; + char *data = NULL; + + patch->fragments = fragment = xcalloc(1, sizeof(*fragment)); + + /* Grab the type of patch */ + llen = linelen(buffer, size); + used = llen; + linenr++; + + if (!strncmp(buffer, "delta ", 6)) { + patch->is_binary = BINARY_DELTA_DEFLATED; + patch->deflate_origlen = strtoul(buffer + 6, NULL, 10); + } + else if (!strncmp(buffer, "literal ", 8)) { + patch->is_binary = BINARY_LITERAL_DEFLATED; + patch->deflate_origlen = strtoul(buffer + 8, NULL, 10); + } + else + return error("unrecognized binary patch at line %d: %.*s", + linenr-1, llen-1, buffer); + buffer += llen; + while (1) { + int byte_length, max_byte_length, newsize; + llen = linelen(buffer, size); + used += llen; + linenr++; + if (llen == 1) + break; + /* Minimum line is "A00000\n" which is 7-byte long, + * and the line length must be multiple of 5 plus 2. + */ + if ((llen < 7) || (llen-2) % 5) + goto corrupt; + max_byte_length = (llen - 2) / 5 * 4; + byte_length = *buffer; + if ('A' <= byte_length && byte_length <= 'Z') + byte_length = byte_length - 'A' + 1; + else if ('a' <= byte_length && byte_length <= 'z') + byte_length = byte_length - 'a' + 27; + else + goto corrupt; + /* if the input length was not multiple of 4, we would + * have filler at the end but the filler should never + * exceed 3 bytes + */ + if (max_byte_length < byte_length || + byte_length <= max_byte_length - 4) + goto corrupt; + newsize = fragment->size + byte_length; + data = xrealloc(data, newsize); + if (decode_85(data + fragment->size, + buffer + 1, + byte_length)) + goto corrupt; + fragment->size = newsize; + buffer += llen; + size -= llen; + } + fragment->patch = data; + return used; + corrupt: + return error("corrupt binary patch at line %d: %.*s", + linenr-1, llen-1, buffer); +} + static int parse_chunk(char *buffer, unsigned long size, struct patch *patch) { int hdrsize, patchsize; @@ -983,19 +1069,34 @@ static int parse_chunk(char *buffer, unsigned long size, struct patch *patch) "Files ", NULL, }; + static const char git_binary[] = "GIT binary patch\n"; int i; int hd = hdrsize + offset; unsigned long llen = linelen(buffer + hd, size - hd); - if (!memcmp(" differ\n", buffer + hd + llen - 8, 8)) + if (llen == sizeof(git_binary) - 1 && + !memcmp(git_binary, buffer + hd, llen)) { + int used; + linenr++; + used = parse_binary(buffer + hd + llen, + size - hd - llen, patch); + if (used) + patchsize = used + llen; + else + patchsize = 0; + } + else if (!memcmp(" differ\n", buffer + hd + llen - 8, 8)) { for (i = 0; binhdr[i]; i++) { int len = strlen(binhdr[i]); if (len < size - hd && !memcmp(binhdr[i], buffer + hd, len)) { + linenr++; patch->is_binary = 1; + patchsize = llen; break; } } + } /* Empty patch cannot be applied if: * - it is a binary patch and we do not do binary_replace, or @@ -1346,76 +1447,150 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag) return offset; } -static int apply_fragments(struct buffer_desc *desc, struct patch *patch) +static char *inflate_it(const void *data, unsigned long size, + unsigned long inflated_size) +{ + z_stream stream; + void *out; + int st; + + memset(&stream, 0, sizeof(stream)); + + stream.next_in = (unsigned char *)data; + stream.avail_in = size; + stream.next_out = out = xmalloc(inflated_size); + stream.avail_out = inflated_size; + inflateInit(&stream); + st = inflate(&stream, Z_FINISH); + if ((st != Z_STREAM_END) || stream.total_out != inflated_size) { + free(out); + return NULL; + } + return out; +} + +static int apply_binary_fragment(struct buffer_desc *desc, struct patch *patch) +{ + unsigned long dst_size; + struct fragment *fragment = patch->fragments; + void *data; + void *result; + + data = inflate_it(fragment->patch, fragment->size, + patch->deflate_origlen); + if (!data) + return error("corrupt patch data"); + switch (patch->is_binary) { + case BINARY_DELTA_DEFLATED: + result = patch_delta(desc->buffer, desc->size, + data, + patch->deflate_origlen, + &dst_size); + free(desc->buffer); + desc->buffer = result; + free(data); + break; + case BINARY_LITERAL_DEFLATED: + free(desc->buffer); + desc->buffer = data; + dst_size = patch->deflate_origlen; + break; + } + if (!desc->buffer) + return -1; + desc->size = desc->alloc = dst_size; + return 0; +} + +static int apply_binary(struct buffer_desc *desc, struct patch *patch) { - struct fragment *frag = patch->fragments; const char *name = patch->old_name ? patch->old_name : patch->new_name; + unsigned char sha1[20]; + unsigned char hdr[50]; + int hdrlen; - if (patch->is_binary) { - unsigned char sha1[20]; + if (!allow_binary_replacement) + return error("cannot apply binary patch to '%s' " + "without --allow-binary-replacement", + name); - if (!allow_binary_replacement) - return error("cannot apply binary patch to '%s' " - "without --allow-binary-replacement", - name); + /* For safety, we require patch index line to contain + * full 40-byte textual SHA1 for old and new, at least for now. + */ + if (strlen(patch->old_sha1_prefix) != 40 || + strlen(patch->new_sha1_prefix) != 40 || + get_sha1_hex(patch->old_sha1_prefix, sha1) || + get_sha1_hex(patch->new_sha1_prefix, sha1)) + return error("cannot apply binary patch to '%s' " + "without full index line", name); - /* For safety, we require patch index line to contain - * full 40-byte textual SHA1 for old and new, at least for now. + if (patch->old_name) { + /* See if the old one matches what the patch + * applies to. */ - if (strlen(patch->old_sha1_prefix) != 40 || - strlen(patch->new_sha1_prefix) != 40 || - get_sha1_hex(patch->old_sha1_prefix, sha1) || - get_sha1_hex(patch->new_sha1_prefix, sha1)) - return error("cannot apply binary patch to '%s' " - "without full index line", name); - - if (patch->old_name) { - unsigned char hdr[50]; - int hdrlen; - - /* See if the old one matches what the patch - * applies to. - */ - write_sha1_file_prepare(desc->buffer, desc->size, - blob_type, sha1, hdr, &hdrlen); - if (strcmp(sha1_to_hex(sha1), patch->old_sha1_prefix)) - return error("the patch applies to '%s' (%s), " - "which does not match the " - "current contents.", - name, sha1_to_hex(sha1)); - } - else { - /* Otherwise, the old one must be empty. */ - if (desc->size) - return error("the patch applies to an empty " - "'%s' but it is not empty", name); - } + write_sha1_file_prepare(desc->buffer, desc->size, + blob_type, sha1, hdr, &hdrlen); + if (strcmp(sha1_to_hex(sha1), patch->old_sha1_prefix)) + return error("the patch applies to '%s' (%s), " + "which does not match the " + "current contents.", + name, sha1_to_hex(sha1)); + } + else { + /* Otherwise, the old one must be empty. */ + if (desc->size) + return error("the patch applies to an empty " + "'%s' but it is not empty", name); + } + + get_sha1_hex(patch->new_sha1_prefix, sha1); + if (!memcmp(sha1, null_sha1, 20)) { + free(desc->buffer); + desc->alloc = desc->size = 0; + desc->buffer = NULL; + return 0; /* deletion patch */ + } - /* For now, we do not record post-image data in the patch, - * and require the object already present in the recipient's - * object database. + if (has_sha1_file(sha1)) { + /* We already have the postimage */ + char type[10]; + unsigned long size; + + free(desc->buffer); + desc->buffer = read_sha1_file(sha1, type, &size); + if (!desc->buffer) + return error("the necessary postimage %s for " + "'%s' cannot be read", + patch->new_sha1_prefix, name); + desc->alloc = desc->size = size; + } + else { + /* We have verified desc matches the preimage; + * apply the patch data to it, which is stored + * in the patch->fragments->{patch,size}. */ - if (desc->buffer) { - free(desc->buffer); - desc->alloc = desc->size = 0; - } - get_sha1_hex(patch->new_sha1_prefix, sha1); - - if (memcmp(sha1, null_sha1, 20)) { - char type[10]; - unsigned long size; - - desc->buffer = read_sha1_file(sha1, type, &size); - if (!desc->buffer) - return error("the necessary postimage %s for " - "'%s' does not exist", - patch->new_sha1_prefix, name); - desc->alloc = desc->size = size; - } + if (apply_binary_fragment(desc, patch)) + return error("binary patch does not apply to '%s'", + name); - return 0; + /* verify that the result matches */ + write_sha1_file_prepare(desc->buffer, desc->size, blob_type, + sha1, hdr, &hdrlen); + if (strcmp(sha1_to_hex(sha1), patch->new_sha1_prefix)) + return error("binary patch to '%s' creates incorrect result", name); } + return 0; +} + +static int apply_fragments(struct buffer_desc *desc, struct patch *patch) +{ + struct fragment *frag = patch->fragments; + const char *name = patch->old_name ? patch->old_name : patch->new_name; + + if (patch->is_binary) + return apply_binary(desc, patch); + while (frag) { if (apply_one_fragment(desc, frag) < 0) return error("patch failed: %s:%ld", @@ -1983,7 +2158,8 @@ int main(int argc, char **argv) diffstat = 1; continue; } - if (!strcmp(arg, "--allow-binary-replacement")) { + if (!strcmp(arg, "--allow-binary-replacement") || + !strcmp(arg, "--binary")) { allow_binary_replacement = 1; continue; } diff --git a/base85.c b/base85.c new file mode 100644 index 0000000000..a9e97f89d9 --- /dev/null +++ b/base85.c @@ -0,0 +1,140 @@ +#include "cache.h" + +#undef DEBUG_85 + +#ifdef DEBUG_85 +#define say(a) fprintf(stderr, a) +#define say1(a,b) fprintf(stderr, a, b) +#define say2(a,b,c) fprintf(stderr, a, b, c) +#else +#define say(a) do {} while(0) +#define say1(a,b) do {} while(0) +#define say2(a,b,c) do {} while(0) +#endif + +static const char en85[] = { + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', + 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', + 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', + 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', + 'u', 'v', 'w', 'x', 'y', 'z', + '!', '#', '$', '%', '&', '(', ')', '*', '+', '-', + ';', '<', '=', '>', '?', '@', '^', '_', '`', '{', + '|', '}', '~' +}; + +static char de85[256]; +static void prep_base85(void) +{ + int i; + if (de85['Z']) + return; + for (i = 0; i < ARRAY_SIZE(en85); i++) { + int ch = en85[i]; + de85[ch] = i + 1; + } +} + +int decode_85(char *dst, char *buffer, int len) +{ + prep_base85(); + + say2("decode 85 <%.*s>", len/4*5, buffer); + while (len) { + unsigned acc = 0; + int de, cnt = 4; + unsigned char ch; + do { + ch = *buffer++; + de = de85[ch]; + if (--de < 0) + return error("invalid base85 alphabet %c", ch); + acc = acc * 85 + de; + } while (--cnt); + ch = *buffer++; + de = de85[ch]; + if (--de < 0) + return error("invalid base85 alphabet %c", ch); + /* + * Detect overflow. The largest + * 5-letter possible is "|NsC0" to + * encode 0xffffffff, and "|NsC" gives + * 0x03030303 at this point (i.e. + * 0xffffffff = 0x03030303 * 85). + */ + if (0x03030303 < acc || + 0xffffffff - de < (acc *= 85)) + error("invalid base85 sequence %.5s", buffer-5); + acc += de; + say1(" %08x", acc); + + cnt = (len < 4) ? len : 4; + len -= cnt; + do { + acc = (acc << 8) | (acc >> 24); + *dst++ = acc; + } while (--cnt); + } + say("\n"); + + return 0; +} + +void encode_85(char *buf, unsigned char *data, int bytes) +{ + prep_base85(); + + say("encode 85"); + while (bytes) { + unsigned acc = 0; + int cnt; + for (cnt = 24; cnt >= 0; cnt -= 8) { + int ch = *data++; + acc |= ch << cnt; + if (--bytes == 0) + break; + } + say1(" %08x", acc); + for (cnt = 4; cnt >= 0; cnt--) { + int val = acc % 85; + acc /= 85; + buf[cnt] = en85[val]; + } + buf += 5; + } + say("\n"); + + *buf = 0; +} + +#ifdef DEBUG_85 +int main(int ac, char **av) +{ + char buf[1024]; + + if (!strcmp(av[1], "-e")) { + int len = strlen(av[2]); + encode_85(buf, av[2], len); + if (len <= 26) len = len + 'A' - 1; + else len = len + 'a' - 26 + 1; + printf("encoded: %c%s\n", len, buf); + return 0; + } + if (!strcmp(av[1], "-d")) { + int len = *av[2]; + if ('A' <= len && len <= 'Z') len = len - 'A' + 1; + else len = len - 'a' + 26 + 1; + decode_85(buf, av[2]+1, len); + printf("decoded: %.*s\n", len, buf); + return 0; + } + if (!strcmp(av[1], "-t")) { + char t[4] = { -1,-1,-1,-1 }; + encode_85(buf, t, 4); + printf("encoded: D%s\n", buf); + return 0; + } +} +#endif @@ -363,4 +363,8 @@ extern int receive_keep_pack(int fd[2], const char *me, int quiet); /* pager.c */ extern void setup_pager(void); +/* base85 */ +int decode_85(char *dst, char *line, int linelen); +void encode_85(char *buf, unsigned char *data, int bytes); + #endif /* CACHE_H */ @@ -8,6 +8,7 @@ #include "quote.h" #include "diff.h" #include "diffcore.h" +#include "delta.h" #include "xdiff-interface.h" static int use_size_cache; @@ -391,6 +392,90 @@ static void show_stats(struct diffstat_t* data) total_files, adds, dels); } +static unsigned char *deflate_it(char *data, + unsigned long size, + unsigned long *result_size) +{ + int bound; + unsigned char *deflated; + z_stream stream; + + memset(&stream, 0, sizeof(stream)); + deflateInit(&stream, Z_BEST_COMPRESSION); + bound = deflateBound(&stream, size); + deflated = xmalloc(bound); + stream.next_out = deflated; + stream.avail_out = bound; + + stream.next_in = (unsigned char *)data; + stream.avail_in = size; + while (deflate(&stream, Z_FINISH) == Z_OK) + ; /* nothing */ + deflateEnd(&stream); + *result_size = stream.total_out; + return deflated; +} + +static void emit_binary_diff(mmfile_t *one, mmfile_t *two) +{ + void *cp; + void *delta; + void *deflated; + void *data; + unsigned long orig_size; + unsigned long delta_size; + unsigned long deflate_size; + unsigned long data_size; + + printf("GIT binary patch\n"); + /* We could do deflated delta, or we could do just deflated two, + * whichever is smaller. + */ + delta = NULL; + deflated = deflate_it(two->ptr, two->size, &deflate_size); + if (one->size && two->size) { + delta = diff_delta(one->ptr, one->size, + two->ptr, two->size, + &delta_size, deflate_size); + if (delta) { + void *to_free = delta; + orig_size = delta_size; + delta = deflate_it(delta, delta_size, &delta_size); + free(to_free); + } + } + + if (delta && delta_size < deflate_size) { + printf("delta %lu\n", orig_size); + free(deflated); + data = delta; + data_size = delta_size; + } + else { + printf("literal %lu\n", two->size); + free(delta); + data = deflated; + data_size = deflate_size; + } + + /* emit data encoded in base85 */ + cp = data; + while (data_size) { + int bytes = (52 < data_size) ? 52 : data_size; + char line[70]; + data_size -= bytes; + if (bytes <= 26) + line[0] = bytes + 'A' - 1; + else + line[0] = bytes - 26 + 'a' - 1; + encode_85(line + 1, cp, bytes); + cp += bytes; + puts(line); + } + printf("\n"); + free(data); +} + #define FIRST_FEW_BYTES 8000 static int mmfile_is_binary(mmfile_t *mf) { @@ -407,6 +492,7 @@ static void builtin_diff(const char *name_a, struct diff_filespec *one, struct diff_filespec *two, const char *xfrm_msg, + struct diff_options *o, int complete_rewrite) { mmfile_t mf1, mf2; @@ -451,8 +537,17 @@ static void builtin_diff(const char *name_a, if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) die("unable to read files to diff"); - if (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2)) - printf("Binary files %s and %s differ\n", lbl[0], lbl[1]); + if (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2)) { + /* Quite common confusing case */ + if (mf1.size == mf2.size && + !memcmp(mf1.ptr, mf2.ptr, mf1.size)) + goto free_ab_and_return; + if (o->binary) + emit_binary_diff(&mf1, &mf2); + else + printf("Binary files %s and %s differ\n", + lbl[0], lbl[1]); + } else { /* Crazy xdl interfaces.. */ const char *diffopts = getenv("GIT_DIFF_OPTS"); @@ -928,6 +1023,7 @@ static void run_diff_cmd(const char *pgm, struct diff_filespec *one, struct diff_filespec *two, const char *xfrm_msg, + struct diff_options *o, int complete_rewrite) { if (pgm) { @@ -937,7 +1033,7 @@ static void run_diff_cmd(const char *pgm, } if (one && two) builtin_diff(name, other ? other : name, - one, two, xfrm_msg, complete_rewrite); + one, two, xfrm_msg, o, complete_rewrite); else printf("* Unmerged path %s\n", name); } @@ -971,7 +1067,7 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) if (DIFF_PAIR_UNMERGED(p)) { /* unmerged */ - run_diff_cmd(pgm, p->one->path, NULL, NULL, NULL, NULL, 0); + run_diff_cmd(pgm, p->one->path, NULL, NULL, NULL, NULL, o, 0); return; } @@ -1041,14 +1137,14 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) * needs to be split into deletion and creation. */ struct diff_filespec *null = alloc_filespec(two->path); - run_diff_cmd(NULL, name, other, one, null, xfrm_msg, 0); + run_diff_cmd(NULL, name, other, one, null, xfrm_msg, o, 0); free(null); null = alloc_filespec(one->path); - run_diff_cmd(NULL, name, other, null, two, xfrm_msg, 0); + run_diff_cmd(NULL, name, other, null, two, xfrm_msg, o, 0); free(null); } else - run_diff_cmd(pgm, name, other, one, two, xfrm_msg, + run_diff_cmd(pgm, name, other, one, two, xfrm_msg, o, complete_rewrite); free(name_munged); @@ -1147,6 +1243,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) options->rename_limit = strtoul(arg+2, NULL, 10); else if (!strcmp(arg, "--full-index")) options->full_index = 1; + else if (!strcmp(arg, "--binary")) { + options->output_format = DIFF_FORMAT_PATCH; + options->full_index = options->binary = 1; + } else if (!strcmp(arg, "--name-only")) options->output_format = DIFF_FORMAT_NAME; else if (!strcmp(arg, "--name-status")) @@ -28,6 +28,7 @@ struct diff_options { with_raw:1, with_stat:1, tree_in_recursive:1, + binary:1, full_index:1, silent_on_remove:1, find_copies_harder:1; diff --git a/t/t4012-diff-binary.sh b/t/t4012-diff-binary.sh new file mode 100755 index 0000000000..bdd95c0d3d --- /dev/null +++ b/t/t4012-diff-binary.sh @@ -0,0 +1,85 @@ +#!/bin/sh +# +# Copyright (c) 2006 Junio C Hamano +# + +test_description='Binary diff and apply +' + +. ./test-lib.sh + +test_expect_success 'prepare repository' \ + 'echo AIT >a && echo BIT >b && echo CIT >c && echo DIT >d && + git-update-index --add a b c d && + echo git >a && + cat ../test4012.png >b && + echo git >c && + cat b b >d' + +test_expect_success 'diff without --binary' \ + 'git-diff | git-apply --stat --summary >current && + cmp current - <<\EOF + a | 2 +- + b | Bin + c | 2 +- + d | Bin + 4 files changed, 2 insertions(+), 2 deletions(-) +EOF' + +test_expect_success 'diff with --binary' \ + 'git-diff --binary | git-apply --stat --summary >current && + cmp current - <<\EOF + a | 2 +- + b | Bin + c | 2 +- + d | Bin + 4 files changed, 2 insertions(+), 2 deletions(-) +EOF' + +# apply needs to be able to skip the binary material correctly +# in order to report the line number of a corrupt patch. +test_expect_success 'apply detecting corrupt patch correctly' \ + 'git-diff | sed -e 's/-CIT/xCIT/' >broken && + if git-apply --stat --summary broken 2>detected + then + echo unhappy - should have detected an error + (exit 1) + else + echo happy + fi && + detected=`cat detected` && + detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` && + detected=`sed -ne "${detected}p" broken` && + test "$detected" = xCIT' + +test_expect_success 'apply detecting corrupt patch correctly' \ + 'git-diff --binary | sed -e 's/-CIT/xCIT/' >broken && + if git-apply --stat --summary broken 2>detected + then + echo unhappy - should have detected an error + (exit 1) + else + echo happy + fi && + detected=`cat detected` && + detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` && + detected=`sed -ne "${detected}p" broken` && + test "$detected" = xCIT' + +test_expect_success 'initial commit' 'git-commit -a -m initial' + +# Try removal (b), modification (d), and creation (e). +test_expect_success 'diff-index with --binary' \ + 'echo AIT >a && mv b e && echo CIT >c && cat e >d && + git-update-index --add --remove a b c d e && + tree0=`git-write-tree` && + git-diff --cached --binary >current && + git-apply --stat --summary current' + +test_expect_success 'apply binary patch' \ + 'git-reset --hard && + git-apply --binary --index <current && + tree1=`git-write-tree` && + test "$tree1" = "$tree0"' + +test_done diff --git a/t/test4012.png b/t/test4012.png Binary files differnew file mode 100644 index 0000000000..7b181d15ce --- /dev/null +++ b/t/test4012.png |
