patch: add longopts, --dry-run, add one more test
function old new delta patch_main 1110 1214 +104 static.patch_longopts - 47 +47 packed_usage 26738 26761 +23 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/0 up/down: 174/0) Total: 174 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
1dacfbb1f4
commit
17c838bc6d
@ -78,12 +78,23 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
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enum {
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OPT_R = (1 << 2),
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OPT_N = (1 << 3),
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OPT_dry_run = (1 << 4) * ENABLE_LONG_OPTS,
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};
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xfunc_error_retval = 2;
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{
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const char *p = "-1";
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const char *i = "-"; /* compat */
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#if ENABLE_LONG_OPTS
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static const char patch_longopts[] ALIGN1 =
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"strip\0" Required_argument "p"
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"input\0" Required_argument "i"
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"reverse\0" No_argument "R"
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"forward\0" No_argument "N"
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"dry-run\0" No_argument "\xff"
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;
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applet_long_options = patch_longopts;
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#endif
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opt = getopt32(argv, "p:i:RN", &p, &i);
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if (opt & OPT_R)
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plus = '-';
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@ -97,7 +108,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
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FILE *dst_stream;
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//char *old_filename;
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char *new_filename;
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char *backup_filename;
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char *backup_filename = NULL;
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unsigned src_cur_line = 1;
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unsigned dst_cur_line = 0;
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unsigned dst_beg_line;
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@ -131,16 +142,21 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
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bb_make_directory(new_filename, -1, FILEUTILS_RECUR);
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*slash = '/';
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}
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backup_filename = NULL;
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src_stream = NULL;
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saved_stat.st_mode = 0644;
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} else {
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} else if (!(opt & OPT_dry_run)) {
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backup_filename = xasprintf("%s.orig", new_filename);
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xrename(new_filename, backup_filename);
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src_stream = xfopen_for_read(backup_filename);
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}
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} else
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src_stream = xfopen_for_read(new_filename);
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if (opt & OPT_dry_run) {
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dst_stream = xfopen_for_write("/dev/null");
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} else {
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dst_stream = xfopen_for_write(new_filename);
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fchmod(fileno(dst_stream), saved_stat.st_mode);
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}
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printf("patching file %s\n", new_filename);
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@ -189,6 +205,11 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
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patch_line = xmalloc_fgets(patch_file);
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if (patch_line == NULL)
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break; /* EOF */
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if (!*patch_line) {
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/* whitespace-damaged patch with "" lines */
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free(patch_line);
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patch_line = xstrdup(" ");
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}
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if ((*patch_line != '-') && (*patch_line != '+')
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&& (*patch_line != ' ')
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) {
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@ -244,7 +265,9 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
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if (backup_filename) {
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unlink(backup_filename);
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}
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if ((dst_cur_line == 0) || (dst_beg_line == 0)) {
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if (!(opt & OPT_dry_run)
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&& ((dst_cur_line == 0) || (dst_beg_line == 0))
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) {
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/* The new patched file is empty, remove it */
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xunlink(new_filename);
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// /* old_filename and new_filename may be the same file */
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@ -898,7 +898,7 @@
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"\n -d Daemonize" \
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#define dos2unix_trivial_usage \
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"[OPTION] [FILE]"
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"[OPTIONS] [FILE]"
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#define dos2unix_full_usage "\n\n" \
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"Convert FILE in-place from DOS to Unix format.\n" \
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"When no file is given, use stdin/stdout.\n" \
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@ -907,7 +907,7 @@
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"\n -d unix2dos" \
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#define unix2dos_trivial_usage \
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"[OPTION] [FILE]"
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"[OPTIONS] [FILE]"
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#define unix2dos_full_usage "\n\n" \
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"Convert FILE in-place from Unix to DOS format.\n" \
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"When no file is given, use stdin/stdout.\n" \
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@ -3250,12 +3250,21 @@
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)
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#define patch_trivial_usage \
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"[-p NUM] [-i DIFF] [-R] [-N]"
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"[OPTIONS] [ORIGFILE [PATCHFILE]]"
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#define patch_full_usage "\n\n" \
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IF_LONG_OPTS( \
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" -p,--strip NUM Strip NUM leading components from file names" \
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"\n -i,--input DIFF Read DIFF instead of stdin" \
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"\n -R,--reverse Reverse patch" \
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"\n -N,--forward Ignore already applied patches" \
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"\n --dry-run Don't actually change files" \
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) \
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IF_NOT_LONG_OPTS( \
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" -p NUM Strip NUM leading components from file names" \
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"\n -i DIFF Read DIFF instead of stdin" \
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"\n -R Reverse patch" \
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"\n -N Ignore already applied patches" \
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)
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#define patch_example_usage \
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"$ patch -p1 < example.diff\n" \
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@ -7,7 +7,7 @@
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# testing "test name" "options" "expected result" "file input" "stdin"
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testing "patch with old_file == new_file" \
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"patch; echo $?; cat input" \
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'patch; echo $?; cat input' \
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"\
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patching file input
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0
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@ -15,7 +15,10 @@ qwe
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asd
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zxc
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" \
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"qwe\nzxc\n" \
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"\
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qwe
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zxc
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" \
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"\
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--- input Jan 01 01:01:01 2000
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+++ input Jan 01 01:01:01 2000
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@ -26,7 +29,7 @@ zxc
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" \
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testing "patch with nonexistent old_file" \
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"patch; echo $?; cat input" \
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'patch; echo $?; cat input' \
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"\
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patching file input
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0
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@ -34,7 +37,10 @@ qwe
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asd
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zxc
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" \
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"qwe\nzxc\n" \
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"\
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qwe
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zxc
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" \
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"\
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--- input.doesnt_exist Jan 01 01:01:01 2000
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+++ input Jan 01 01:01:01 2000
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@ -45,14 +51,18 @@ zxc
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" \
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testing "patch -R with nonexistent old_file" \
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"patch -R; echo $?; cat input" \
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'patch -R; echo $?; cat input' \
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"\
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patching file input
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0
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qwe
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zxc
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" \
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"qwe\nasd\nzxc\n" \
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"\
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qwe
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asd
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zxc
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" \
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"\
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--- input.doesnt_exist Jan 01 01:01:01 2000
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+++ input Jan 01 01:01:01 2000
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@ -62,4 +72,29 @@ zxc
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zxc
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" \
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testing "patch detects already applied hunk" \
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'patch 2>&1; echo $?; cat input' \
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"\
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patching file input
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patch: hunk #1 FAILED at 1
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patch: 1 out of 1 hunk FAILED
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1
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abc
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def
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123
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" \
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"\
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abc
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def
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123
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" \
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"\
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--- input.old Jan 01 01:01:01 2000
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+++ input Jan 01 01:01:01 2000
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@@ -1,2 +1,3 @@
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abc
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+def
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123
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" \
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exit $FAILCOUNT
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