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106 lines
3.0 KiB
106 lines
3.0 KiB
#include "builtin.h" |
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#include "cache.h" |
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#include "xdiff/xdiff.h" |
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#include "xdiff-interface.h" |
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#include "parse-options.h" |
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static const char *const merge_file_usage[] = { |
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N_("git merge-file [options] [-L name1 [-L orig [-L name2]]] file1 orig_file file2"), |
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NULL |
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}; |
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static int label_cb(const struct option *opt, const char *arg, int unset) |
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{ |
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static int label_count = 0; |
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const char **names = (const char **)opt->value; |
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|
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if (label_count >= 3) |
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return error("too many labels on the command line"); |
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names[label_count++] = arg; |
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return 0; |
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} |
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int cmd_merge_file(int argc, const char **argv, const char *prefix) |
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{ |
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const char *names[3] = { NULL, NULL, NULL }; |
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mmfile_t mmfs[3]; |
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mmbuffer_t result = {NULL, 0}; |
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xmparam_t xmp = {{0}}; |
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int ret = 0, i = 0, to_stdout = 0; |
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int quiet = 0; |
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int prefixlen = 0; |
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struct option options[] = { |
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OPT_BOOLEAN('p', "stdout", &to_stdout, N_("send results to standard output")), |
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OPT_SET_INT(0, "diff3", &xmp.style, N_("use a diff3 based merge"), XDL_MERGE_DIFF3), |
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OPT_SET_INT(0, "ours", &xmp.favor, N_("for conflicts, use our version"), |
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XDL_MERGE_FAVOR_OURS), |
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OPT_SET_INT(0, "theirs", &xmp.favor, N_("for conflicts, use their version"), |
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XDL_MERGE_FAVOR_THEIRS), |
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OPT_SET_INT(0, "union", &xmp.favor, N_("for conflicts, use a union version"), |
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XDL_MERGE_FAVOR_UNION), |
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OPT_INTEGER(0, "marker-size", &xmp.marker_size, |
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N_("for conflicts, use this marker size")), |
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OPT__QUIET(&quiet, N_("do not warn about conflicts")), |
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OPT_CALLBACK('L', NULL, names, N_("name"), |
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N_("set labels for file1/orig_file/file2"), &label_cb), |
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OPT_END(), |
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}; |
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xmp.level = XDL_MERGE_ZEALOUS_ALNUM; |
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xmp.style = 0; |
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xmp.favor = 0; |
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if (startup_info->have_repository) { |
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/* Read the configuration file */ |
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git_config(git_xmerge_config, NULL); |
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if (0 <= git_xmerge_style) |
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xmp.style = git_xmerge_style; |
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} |
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argc = parse_options(argc, argv, prefix, options, merge_file_usage, 0); |
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if (argc != 3) |
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usage_with_options(merge_file_usage, options); |
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if (quiet) { |
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if (!freopen("/dev/null", "w", stderr)) |
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return error("failed to redirect stderr to /dev/null: " |
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"%s", strerror(errno)); |
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} |
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if (prefix) |
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prefixlen = strlen(prefix); |
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for (i = 0; i < 3; i++) { |
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const char *fname = prefix_filename(prefix, prefixlen, argv[i]); |
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if (!names[i]) |
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names[i] = argv[i]; |
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if (read_mmfile(mmfs + i, fname)) |
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return -1; |
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if (buffer_is_binary(mmfs[i].ptr, mmfs[i].size)) |
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return error("Cannot merge binary files: %s", |
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argv[i]); |
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} |
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xmp.ancestor = names[1]; |
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xmp.file1 = names[0]; |
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xmp.file2 = names[2]; |
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ret = xdl_merge(mmfs + 1, mmfs + 0, mmfs + 2, &xmp, &result); |
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for (i = 0; i < 3; i++) |
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free(mmfs[i].ptr); |
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if (ret >= 0) { |
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const char *filename = argv[0]; |
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FILE *f = to_stdout ? stdout : fopen(filename, "wb"); |
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if (!f) |
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ret = error("Could not open %s for writing", filename); |
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else if (result.size && |
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fwrite(result.ptr, result.size, 1, f) != 1) |
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ret = error("Could not write to %s", filename); |
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else if (fclose(f)) |
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ret = error("Could not close %s", filename); |
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free(result.ptr); |
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} |
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return ret; |
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}
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