1058 строки
26 KiB
C
1058 строки
26 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Traverse the source tree, parsing all .gitignore files, and print file paths
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// that are ignored by git.
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// The output is suitable to the --exclude-from option of tar.
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// This is useful until the --exclude-vcs-ignores option gets working correctly.
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//
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// Copyright (C) 2023 Masahiro Yamada <masahiroy@kernel.org>
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// (a lot of code imported from GIT)
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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// Imported from commit 23c56f7bd5f1667f8b793d796bf30e39545920f6 in GIT
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//
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//---------------------------(IMPORT FROM GIT BEGIN)---------------------------
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// Copied from environment.c
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static bool ignore_case;
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// Copied from git-compat-util.h
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/* Sane ctype - no locale, and works with signed chars */
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#undef isascii
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#undef isspace
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#undef isdigit
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#undef isalpha
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#undef isalnum
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#undef isprint
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#undef islower
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#undef isupper
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#undef tolower
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#undef toupper
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#undef iscntrl
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#undef ispunct
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#undef isxdigit
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static const unsigned char sane_ctype[256];
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#define GIT_SPACE 0x01
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#define GIT_DIGIT 0x02
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#define GIT_ALPHA 0x04
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#define GIT_GLOB_SPECIAL 0x08
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#define GIT_REGEX_SPECIAL 0x10
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#define GIT_PATHSPEC_MAGIC 0x20
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#define GIT_CNTRL 0x40
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#define GIT_PUNCT 0x80
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#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
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#define isascii(x) (((x) & ~0x7f) == 0)
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#define isspace(x) sane_istest(x,GIT_SPACE)
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#define isdigit(x) sane_istest(x,GIT_DIGIT)
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#define isalpha(x) sane_istest(x,GIT_ALPHA)
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#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
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#define isprint(x) ((x) >= 0x20 && (x) <= 0x7e)
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#define islower(x) sane_iscase(x, 1)
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#define isupper(x) sane_iscase(x, 0)
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#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
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#define iscntrl(x) (sane_istest(x,GIT_CNTRL))
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#define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \
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GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC)
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#define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1)
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#define tolower(x) sane_case((unsigned char)(x), 0x20)
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#define toupper(x) sane_case((unsigned char)(x), 0)
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static inline int sane_case(int x, int high)
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{
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if (sane_istest(x, GIT_ALPHA))
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x = (x & ~0x20) | high;
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return x;
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}
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static inline int sane_iscase(int x, int is_lower)
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{
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if (!sane_istest(x, GIT_ALPHA))
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return 0;
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if (is_lower)
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return (x & 0x20) != 0;
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else
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return (x & 0x20) == 0;
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}
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// Copied from ctype.c
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enum {
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S = GIT_SPACE,
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A = GIT_ALPHA,
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D = GIT_DIGIT,
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G = GIT_GLOB_SPECIAL, /* *, ?, [, \\ */
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R = GIT_REGEX_SPECIAL, /* $, (, ), +, ., ^, {, | */
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P = GIT_PATHSPEC_MAGIC, /* other non-alnum, except for ] and } */
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X = GIT_CNTRL,
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U = GIT_PUNCT,
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Z = GIT_CNTRL | GIT_SPACE
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};
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static const unsigned char sane_ctype[256] = {
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X, X, X, X, X, X, X, X, X, Z, Z, X, X, Z, X, X, /* 0.. 15 */
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X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 16.. 31 */
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S, P, P, P, R, P, P, P, R, R, G, R, P, P, R, P, /* 32.. 47 */
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D, D, D, D, D, D, D, D, D, D, P, P, P, P, P, G, /* 48.. 63 */
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P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 64.. 79 */
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A, A, A, A, A, A, A, A, A, A, A, G, G, U, R, P, /* 80.. 95 */
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P, A, A, A, A, A, A, A, A, A, A, A, A, A, A, A, /* 96..111 */
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A, A, A, A, A, A, A, A, A, A, A, R, R, U, P, X, /* 112..127 */
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/* Nothing in the 128.. range */
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};
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// Copied from hex.c
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static const signed char hexval_table[256] = {
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-1, -1, -1, -1, -1, -1, -1, -1, /* 00-07 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 08-0f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 10-17 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 18-1f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 20-27 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 28-2f */
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0, 1, 2, 3, 4, 5, 6, 7, /* 30-37 */
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8, 9, -1, -1, -1, -1, -1, -1, /* 38-3f */
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-1, 10, 11, 12, 13, 14, 15, -1, /* 40-47 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 48-4f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 50-57 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 58-5f */
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-1, 10, 11, 12, 13, 14, 15, -1, /* 60-67 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 68-67 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 70-77 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 78-7f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 80-87 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 88-8f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 90-97 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* 98-9f */
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-1, -1, -1, -1, -1, -1, -1, -1, /* a0-a7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* a8-af */
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-1, -1, -1, -1, -1, -1, -1, -1, /* b0-b7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* b8-bf */
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-1, -1, -1, -1, -1, -1, -1, -1, /* c0-c7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* c8-cf */
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-1, -1, -1, -1, -1, -1, -1, -1, /* d0-d7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* d8-df */
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-1, -1, -1, -1, -1, -1, -1, -1, /* e0-e7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* e8-ef */
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-1, -1, -1, -1, -1, -1, -1, -1, /* f0-f7 */
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-1, -1, -1, -1, -1, -1, -1, -1, /* f8-ff */
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};
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// Copied from wildmatch.h
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#define WM_CASEFOLD 1
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#define WM_PATHNAME 2
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#define WM_NOMATCH 1
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#define WM_MATCH 0
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#define WM_ABORT_ALL -1
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#define WM_ABORT_TO_STARSTAR -2
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// Copied from wildmatch.c
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typedef unsigned char uchar;
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// local modification: remove NEGATE_CLASS(2)
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#define CC_EQ(class, len, litmatch) ((len) == sizeof (litmatch)-1 \
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&& *(class) == *(litmatch) \
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&& strncmp((char*)class, litmatch, len) == 0)
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// local modification: simpilify macros
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#define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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#define ISGRAPH(c) (isprint(c) && !isspace(c))
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#define ISPRINT(c) isprint(c)
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#define ISDIGIT(c) isdigit(c)
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#define ISALNUM(c) isalnum(c)
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#define ISALPHA(c) isalpha(c)
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#define ISCNTRL(c) iscntrl(c)
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#define ISLOWER(c) islower(c)
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#define ISPUNCT(c) ispunct(c)
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#define ISSPACE(c) isspace(c)
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#define ISUPPER(c) isupper(c)
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#define ISXDIGIT(c) isxdigit(c)
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/* Match pattern "p" against "text" */
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static int dowild(const uchar *p, const uchar *text, unsigned int flags)
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{
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uchar p_ch;
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const uchar *pattern = p;
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for ( ; (p_ch = *p) != '\0'; text++, p++) {
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int matched, match_slash, negated;
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uchar t_ch, prev_ch;
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if ((t_ch = *text) == '\0' && p_ch != '*')
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return WM_ABORT_ALL;
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if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
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t_ch = tolower(t_ch);
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if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
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p_ch = tolower(p_ch);
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switch (p_ch) {
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case '\\':
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/* Literal match with following character. Note that the test
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* in "default" handles the p[1] == '\0' failure case. */
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p_ch = *++p;
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/* FALLTHROUGH */
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default:
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if (t_ch != p_ch)
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return WM_NOMATCH;
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continue;
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case '?':
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/* Match anything but '/'. */
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if ((flags & WM_PATHNAME) && t_ch == '/')
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return WM_NOMATCH;
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continue;
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case '*':
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if (*++p == '*') {
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const uchar *prev_p = p - 2;
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while (*++p == '*') {}
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if (!(flags & WM_PATHNAME))
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/* without WM_PATHNAME, '*' == '**' */
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match_slash = 1;
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else if ((prev_p < pattern || *prev_p == '/') &&
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(*p == '\0' || *p == '/' ||
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(p[0] == '\\' && p[1] == '/'))) {
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/*
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* Assuming we already match 'foo/' and are at
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* <star star slash>, just assume it matches
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* nothing and go ahead match the rest of the
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* pattern with the remaining string. This
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* helps make foo/<*><*>/bar (<> because
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* otherwise it breaks C comment syntax) match
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* both foo/bar and foo/a/bar.
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*/
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if (p[0] == '/' &&
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dowild(p + 1, text, flags) == WM_MATCH)
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return WM_MATCH;
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match_slash = 1;
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} else /* WM_PATHNAME is set */
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match_slash = 0;
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} else
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/* without WM_PATHNAME, '*' == '**' */
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match_slash = flags & WM_PATHNAME ? 0 : 1;
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if (*p == '\0') {
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/* Trailing "**" matches everything. Trailing "*" matches
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* only if there are no more slash characters. */
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if (!match_slash) {
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if (strchr((char *)text, '/'))
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return WM_NOMATCH;
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}
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return WM_MATCH;
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} else if (!match_slash && *p == '/') {
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/*
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* _one_ asterisk followed by a slash
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* with WM_PATHNAME matches the next
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* directory
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*/
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const char *slash = strchr((char*)text, '/');
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if (!slash)
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return WM_NOMATCH;
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text = (const uchar*)slash;
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/* the slash is consumed by the top-level for loop */
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break;
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}
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while (1) {
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if (t_ch == '\0')
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break;
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/*
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* Try to advance faster when an asterisk is
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* followed by a literal. We know in this case
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* that the string before the literal
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* must belong to "*".
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* If match_slash is false, do not look past
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* the first slash as it cannot belong to '*'.
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*/
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if (!is_glob_special(*p)) {
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p_ch = *p;
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if ((flags & WM_CASEFOLD) && ISUPPER(p_ch))
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p_ch = tolower(p_ch);
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while ((t_ch = *text) != '\0' &&
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(match_slash || t_ch != '/')) {
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if ((flags & WM_CASEFOLD) && ISUPPER(t_ch))
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t_ch = tolower(t_ch);
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if (t_ch == p_ch)
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break;
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text++;
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}
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if (t_ch != p_ch)
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return WM_NOMATCH;
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}
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if ((matched = dowild(p, text, flags)) != WM_NOMATCH) {
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if (!match_slash || matched != WM_ABORT_TO_STARSTAR)
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return matched;
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} else if (!match_slash && t_ch == '/')
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return WM_ABORT_TO_STARSTAR;
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t_ch = *++text;
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}
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return WM_ABORT_ALL;
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case '[':
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p_ch = *++p;
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if (p_ch == '^')
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p_ch = '!';
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/* Assign literal 1/0 because of "matched" comparison. */
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negated = p_ch == '!' ? 1 : 0;
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if (negated) {
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/* Inverted character class. */
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p_ch = *++p;
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}
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prev_ch = 0;
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matched = 0;
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do {
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if (!p_ch)
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return WM_ABORT_ALL;
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if (p_ch == '\\') {
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p_ch = *++p;
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if (!p_ch)
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return WM_ABORT_ALL;
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if (t_ch == p_ch)
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matched = 1;
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} else if (p_ch == '-' && prev_ch && p[1] && p[1] != ']') {
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p_ch = *++p;
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if (p_ch == '\\') {
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p_ch = *++p;
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if (!p_ch)
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return WM_ABORT_ALL;
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}
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if (t_ch <= p_ch && t_ch >= prev_ch)
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matched = 1;
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else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch)) {
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uchar t_ch_upper = toupper(t_ch);
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if (t_ch_upper <= p_ch && t_ch_upper >= prev_ch)
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matched = 1;
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}
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p_ch = 0; /* This makes "prev_ch" get set to 0. */
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} else if (p_ch == '[' && p[1] == ':') {
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const uchar *s;
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int i;
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for (s = p += 2; (p_ch = *p) && p_ch != ']'; p++) {} /*SHARED ITERATOR*/
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if (!p_ch)
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return WM_ABORT_ALL;
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i = p - s - 1;
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if (i < 0 || p[-1] != ':') {
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/* Didn't find ":]", so treat like a normal set. */
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p = s - 2;
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p_ch = '[';
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if (t_ch == p_ch)
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matched = 1;
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continue;
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}
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if (CC_EQ(s,i, "alnum")) {
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if (ISALNUM(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "alpha")) {
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if (ISALPHA(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "blank")) {
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if (ISBLANK(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "cntrl")) {
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if (ISCNTRL(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "digit")) {
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if (ISDIGIT(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "graph")) {
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if (ISGRAPH(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "lower")) {
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if (ISLOWER(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "print")) {
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if (ISPRINT(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "punct")) {
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if (ISPUNCT(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "space")) {
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if (ISSPACE(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "upper")) {
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if (ISUPPER(t_ch))
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matched = 1;
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else if ((flags & WM_CASEFOLD) && ISLOWER(t_ch))
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matched = 1;
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} else if (CC_EQ(s,i, "xdigit")) {
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if (ISXDIGIT(t_ch))
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matched = 1;
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} else /* malformed [:class:] string */
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return WM_ABORT_ALL;
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p_ch = 0; /* This makes "prev_ch" get set to 0. */
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} else if (t_ch == p_ch)
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matched = 1;
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} while (prev_ch = p_ch, (p_ch = *++p) != ']');
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if (matched == negated ||
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((flags & WM_PATHNAME) && t_ch == '/'))
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return WM_NOMATCH;
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continue;
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}
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}
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return *text ? WM_NOMATCH : WM_MATCH;
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}
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/* Match the "pattern" against the "text" string. */
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static int wildmatch(const char *pattern, const char *text, unsigned int flags)
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{
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// local modification: move WM_CASEFOLD here
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if (ignore_case)
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flags |= WM_CASEFOLD;
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return dowild((const uchar*)pattern, (const uchar*)text, flags);
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}
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// Copied from dir.h
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#define PATTERN_FLAG_NODIR 1
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#define PATTERN_FLAG_ENDSWITH 4
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#define PATTERN_FLAG_MUSTBEDIR 8
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#define PATTERN_FLAG_NEGATIVE 16
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// Copied from dir.c
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|
|
static int fspathncmp(const char *a, const char *b, size_t count)
|
|
{
|
|
return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
|
|
}
|
|
|
|
static int simple_length(const char *match)
|
|
{
|
|
int len = -1;
|
|
|
|
for (;;) {
|
|
unsigned char c = *match++;
|
|
len++;
|
|
if (c == '\0' || is_glob_special(c))
|
|
return len;
|
|
}
|
|
}
|
|
|
|
static int no_wildcard(const char *string)
|
|
{
|
|
return string[simple_length(string)] == '\0';
|
|
}
|
|
|
|
static void parse_path_pattern(const char **pattern,
|
|
int *patternlen,
|
|
unsigned *flags,
|
|
int *nowildcardlen)
|
|
{
|
|
const char *p = *pattern;
|
|
size_t i, len;
|
|
|
|
*flags = 0;
|
|
if (*p == '!') {
|
|
*flags |= PATTERN_FLAG_NEGATIVE;
|
|
p++;
|
|
}
|
|
len = strlen(p);
|
|
if (len && p[len - 1] == '/') {
|
|
len--;
|
|
*flags |= PATTERN_FLAG_MUSTBEDIR;
|
|
}
|
|
for (i = 0; i < len; i++) {
|
|
if (p[i] == '/')
|
|
break;
|
|
}
|
|
if (i == len)
|
|
*flags |= PATTERN_FLAG_NODIR;
|
|
*nowildcardlen = simple_length(p);
|
|
/*
|
|
* we should have excluded the trailing slash from 'p' too,
|
|
* but that's one more allocation. Instead just make sure
|
|
* nowildcardlen does not exceed real patternlen
|
|
*/
|
|
if (*nowildcardlen > len)
|
|
*nowildcardlen = len;
|
|
if (*p == '*' && no_wildcard(p + 1))
|
|
*flags |= PATTERN_FLAG_ENDSWITH;
|
|
*pattern = p;
|
|
*patternlen = len;
|
|
}
|
|
|
|
static void trim_trailing_spaces(char *buf)
|
|
{
|
|
char *p, *last_space = NULL;
|
|
|
|
for (p = buf; *p; p++)
|
|
switch (*p) {
|
|
case ' ':
|
|
if (!last_space)
|
|
last_space = p;
|
|
break;
|
|
case '\\':
|
|
p++;
|
|
if (!*p)
|
|
return;
|
|
/* fallthrough */
|
|
default:
|
|
last_space = NULL;
|
|
}
|
|
|
|
if (last_space)
|
|
*last_space = '\0';
|
|
}
|
|
|
|
static int match_basename(const char *basename, int basenamelen,
|
|
const char *pattern, int prefix, int patternlen,
|
|
unsigned flags)
|
|
{
|
|
if (prefix == patternlen) {
|
|
if (patternlen == basenamelen &&
|
|
!fspathncmp(pattern, basename, basenamelen))
|
|
return 1;
|
|
} else if (flags & PATTERN_FLAG_ENDSWITH) {
|
|
/* "*literal" matching against "fooliteral" */
|
|
if (patternlen - 1 <= basenamelen &&
|
|
!fspathncmp(pattern + 1,
|
|
basename + basenamelen - (patternlen - 1),
|
|
patternlen - 1))
|
|
return 1;
|
|
} else {
|
|
// local modification: call wildmatch() directly
|
|
if (!wildmatch(pattern, basename, flags))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_pathname(const char *pathname, int pathlen,
|
|
const char *base, int baselen,
|
|
const char *pattern, int prefix, int patternlen)
|
|
{
|
|
// local modification: remove local variables
|
|
|
|
/*
|
|
* match with FNM_PATHNAME; the pattern has base implicitly
|
|
* in front of it.
|
|
*/
|
|
if (*pattern == '/') {
|
|
pattern++;
|
|
patternlen--;
|
|
prefix--;
|
|
}
|
|
|
|
/*
|
|
* baselen does not count the trailing slash. base[] may or
|
|
* may not end with a trailing slash though.
|
|
*/
|
|
if (pathlen < baselen + 1 ||
|
|
(baselen && pathname[baselen] != '/') ||
|
|
fspathncmp(pathname, base, baselen))
|
|
return 0;
|
|
|
|
// local modification: simplified because always baselen > 0
|
|
pathname += baselen + 1;
|
|
pathlen -= baselen + 1;
|
|
|
|
if (prefix) {
|
|
/*
|
|
* if the non-wildcard part is longer than the
|
|
* remaining pathname, surely it cannot match.
|
|
*/
|
|
if (prefix > pathlen)
|
|
return 0;
|
|
|
|
if (fspathncmp(pattern, pathname, prefix))
|
|
return 0;
|
|
pattern += prefix;
|
|
patternlen -= prefix;
|
|
pathname += prefix;
|
|
pathlen -= prefix;
|
|
|
|
/*
|
|
* If the whole pattern did not have a wildcard,
|
|
* then our prefix match is all we need; we
|
|
* do not need to call fnmatch at all.
|
|
*/
|
|
if (!patternlen && !pathlen)
|
|
return 1;
|
|
}
|
|
|
|
// local modification: call wildmatch() directly
|
|
return !wildmatch(pattern, pathname, WM_PATHNAME);
|
|
}
|
|
|
|
// Copied from git/utf8.c
|
|
|
|
static const char utf8_bom[] = "\357\273\277";
|
|
|
|
//----------------------------(IMPORT FROM GIT END)----------------------------
|
|
|
|
struct pattern {
|
|
unsigned int flags;
|
|
int nowildcardlen;
|
|
int patternlen;
|
|
int dirlen;
|
|
char pattern[];
|
|
};
|
|
|
|
static struct pattern **pattern_list;
|
|
static int nr_patterns, alloced_patterns;
|
|
|
|
// Remember the number of patterns at each directory level
|
|
static int *nr_patterns_at;
|
|
// Track the current/max directory level;
|
|
static int depth, max_depth;
|
|
static bool debug_on;
|
|
static FILE *out_fp, *stat_fp;
|
|
static char *prefix = "";
|
|
static char *progname;
|
|
|
|
static void __attribute__((noreturn)) perror_exit(const char *s)
|
|
{
|
|
perror(s);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void __attribute__((noreturn)) error_exit(const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
|
|
fprintf(stderr, "%s: error: ", progname);
|
|
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void debug(const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int i;
|
|
|
|
if (!debug_on)
|
|
return;
|
|
|
|
fprintf(stderr, "[DEBUG] ");
|
|
|
|
for (i = 0; i < depth * 2; i++)
|
|
fputc(' ', stderr);
|
|
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
}
|
|
|
|
static void *xrealloc(void *ptr, size_t size)
|
|
{
|
|
ptr = realloc(ptr, size);
|
|
if (!ptr)
|
|
perror_exit(progname);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
static void *xmalloc(size_t size)
|
|
{
|
|
return xrealloc(NULL, size);
|
|
}
|
|
|
|
// similar to last_matching_pattern_from_list() in GIT
|
|
static bool is_ignored(const char *path, int pathlen, int dirlen, bool is_dir)
|
|
{
|
|
int i;
|
|
|
|
// Search in the reverse order because the last matching pattern wins.
|
|
for (i = nr_patterns - 1; i >= 0; i--) {
|
|
struct pattern *p = pattern_list[i];
|
|
unsigned int flags = p->flags;
|
|
const char *gitignore_dir = p->pattern + p->patternlen + 1;
|
|
bool ignored;
|
|
|
|
if ((flags & PATTERN_FLAG_MUSTBEDIR) && !is_dir)
|
|
continue;
|
|
|
|
if (flags & PATTERN_FLAG_NODIR) {
|
|
if (!match_basename(path + dirlen + 1,
|
|
pathlen - dirlen - 1,
|
|
p->pattern,
|
|
p->nowildcardlen,
|
|
p->patternlen,
|
|
p->flags))
|
|
continue;
|
|
} else {
|
|
if (!match_pathname(path, pathlen,
|
|
gitignore_dir, p->dirlen,
|
|
p->pattern,
|
|
p->nowildcardlen,
|
|
p->patternlen))
|
|
continue;
|
|
}
|
|
|
|
debug("%s: matches %s%s%s (%s/.gitignore)\n", path,
|
|
flags & PATTERN_FLAG_NEGATIVE ? "!" : "", p->pattern,
|
|
flags & PATTERN_FLAG_MUSTBEDIR ? "/" : "",
|
|
gitignore_dir);
|
|
|
|
ignored = (flags & PATTERN_FLAG_NEGATIVE) == 0;
|
|
if (ignored)
|
|
debug("Ignore: %s\n", path);
|
|
|
|
return ignored;
|
|
}
|
|
|
|
debug("%s: no match\n", path);
|
|
|
|
return false;
|
|
}
|
|
|
|
static void add_pattern(const char *string, const char *dir, int dirlen)
|
|
{
|
|
struct pattern *p;
|
|
int patternlen, nowildcardlen;
|
|
unsigned int flags;
|
|
|
|
parse_path_pattern(&string, &patternlen, &flags, &nowildcardlen);
|
|
|
|
if (patternlen == 0)
|
|
return;
|
|
|
|
p = xmalloc(sizeof(*p) + patternlen + dirlen + 2);
|
|
|
|
memcpy(p->pattern, string, patternlen);
|
|
p->pattern[patternlen] = 0;
|
|
memcpy(p->pattern + patternlen + 1, dir, dirlen);
|
|
p->pattern[patternlen + 1 + dirlen] = 0;
|
|
|
|
p->patternlen = patternlen;
|
|
p->nowildcardlen = nowildcardlen;
|
|
p->dirlen = dirlen;
|
|
p->flags = flags;
|
|
|
|
debug("Add pattern: %s%s%s\n",
|
|
flags & PATTERN_FLAG_NEGATIVE ? "!" : "", p->pattern,
|
|
flags & PATTERN_FLAG_MUSTBEDIR ? "/" : "");
|
|
|
|
if (nr_patterns >= alloced_patterns) {
|
|
alloced_patterns += 128;
|
|
pattern_list = xrealloc(pattern_list,
|
|
sizeof(*pattern_list) * alloced_patterns);
|
|
}
|
|
|
|
pattern_list[nr_patterns++] = p;
|
|
}
|
|
|
|
// similar to add_patterns_from_buffer() in GIT
|
|
static void add_patterns_from_gitignore(const char *dir, int dirlen)
|
|
{
|
|
struct stat st;
|
|
char path[PATH_MAX], *buf, *entry;
|
|
size_t size;
|
|
int fd, pathlen, i;
|
|
|
|
pathlen = snprintf(path, sizeof(path), "%s/.gitignore", dir);
|
|
if (pathlen >= sizeof(path))
|
|
error_exit("%s: too long path was truncated\n", path);
|
|
|
|
fd = open(path, O_RDONLY | O_NOFOLLOW);
|
|
if (fd < 0) {
|
|
if (errno != ENOENT)
|
|
return perror_exit(path);
|
|
return;
|
|
}
|
|
|
|
if (fstat(fd, &st) < 0)
|
|
perror_exit(path);
|
|
|
|
size = st.st_size;
|
|
|
|
buf = xmalloc(size + 1);
|
|
if (read(fd, buf, st.st_size) != st.st_size)
|
|
perror_exit(path);
|
|
|
|
buf[st.st_size] = '\n';
|
|
if (close(fd))
|
|
perror_exit(path);
|
|
|
|
debug("Parse %s\n", path);
|
|
|
|
entry = buf;
|
|
|
|
// skip utf8 bom
|
|
if (!strncmp(entry, utf8_bom, strlen(utf8_bom)))
|
|
entry += strlen(utf8_bom);
|
|
|
|
for (i = entry - buf; i < size; i++) {
|
|
if (buf[i] == '\n') {
|
|
if (entry != buf + i && entry[0] != '#') {
|
|
buf[i - (i && buf[i-1] == '\r')] = 0;
|
|
trim_trailing_spaces(entry);
|
|
add_pattern(entry, dir, dirlen);
|
|
}
|
|
entry = buf + i + 1;
|
|
}
|
|
}
|
|
|
|
free(buf);
|
|
}
|
|
|
|
// Save the current number of patterns and increment the depth
|
|
static void increment_depth(void)
|
|
{
|
|
if (depth >= max_depth) {
|
|
max_depth += 1;
|
|
nr_patterns_at = xrealloc(nr_patterns_at,
|
|
sizeof(*nr_patterns_at) * max_depth);
|
|
}
|
|
|
|
nr_patterns_at[depth] = nr_patterns;
|
|
depth++;
|
|
}
|
|
|
|
// Decrement the depth, and free up the patterns of this directory level.
|
|
static void decrement_depth(void)
|
|
{
|
|
depth--;
|
|
assert(depth >= 0);
|
|
|
|
while (nr_patterns > nr_patterns_at[depth])
|
|
free(pattern_list[--nr_patterns]);
|
|
}
|
|
|
|
static void print_path(const char *path)
|
|
{
|
|
// The path always starts with "./"
|
|
assert(strlen(path) >= 2);
|
|
|
|
// Replace the root directory with a preferred prefix.
|
|
// This is useful for the tar command.
|
|
fprintf(out_fp, "%s%s\n", prefix, path + 2);
|
|
}
|
|
|
|
static void print_stat(const char *path, struct stat *st)
|
|
{
|
|
if (!stat_fp)
|
|
return;
|
|
|
|
if (!S_ISREG(st->st_mode) && !S_ISLNK(st->st_mode))
|
|
return;
|
|
|
|
assert(strlen(path) >= 2);
|
|
|
|
fprintf(stat_fp, "%c %9ld %10ld %s\n",
|
|
S_ISLNK(st->st_mode) ? 'l' : '-',
|
|
st->st_size, st->st_mtim.tv_sec, path + 2);
|
|
}
|
|
|
|
// Traverse the entire directory tree, parsing .gitignore files.
|
|
// Print file paths that are not tracked by git.
|
|
//
|
|
// Return true if all files under the directory are ignored, false otherwise.
|
|
static bool traverse_directory(const char *dir, int dirlen)
|
|
{
|
|
bool all_ignored = true;
|
|
DIR *dirp;
|
|
|
|
debug("Enter[%d]: %s\n", depth, dir);
|
|
increment_depth();
|
|
|
|
add_patterns_from_gitignore(dir, dirlen);
|
|
|
|
dirp = opendir(dir);
|
|
if (!dirp)
|
|
perror_exit(dir);
|
|
|
|
while (1) {
|
|
struct dirent *d;
|
|
struct stat st;
|
|
char path[PATH_MAX];
|
|
int pathlen;
|
|
bool ignored;
|
|
|
|
errno = 0;
|
|
d = readdir(dirp);
|
|
if (!d) {
|
|
if (errno)
|
|
perror_exit(dir);
|
|
break;
|
|
}
|
|
|
|
if (!strcmp(d->d_name, "..") || !strcmp(d->d_name, "."))
|
|
continue;
|
|
|
|
pathlen = snprintf(path, sizeof(path), "%s/%s", dir, d->d_name);
|
|
if (pathlen >= sizeof(path))
|
|
error_exit("%s: too long path was truncated\n", path);
|
|
|
|
if (lstat(path, &st) < 0)
|
|
perror_exit(path);
|
|
|
|
if ((!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode)) ||
|
|
is_ignored(path, pathlen, dirlen, S_ISDIR(st.st_mode))) {
|
|
ignored = true;
|
|
} else {
|
|
if (S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode))
|
|
// If all the files in a directory are ignored,
|
|
// let's ignore that directory as well. This
|
|
// will avoid empty directories in the tarball.
|
|
ignored = traverse_directory(path, pathlen);
|
|
else
|
|
ignored = false;
|
|
}
|
|
|
|
if (ignored) {
|
|
print_path(path);
|
|
} else {
|
|
print_stat(path, &st);
|
|
all_ignored = false;
|
|
}
|
|
}
|
|
|
|
if (closedir(dirp))
|
|
perror_exit(dir);
|
|
|
|
decrement_depth();
|
|
debug("Leave[%d]: %s\n", depth, dir);
|
|
|
|
return all_ignored;
|
|
}
|
|
|
|
static void usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: %s [options]\n"
|
|
"\n"
|
|
"Show files that are ignored by git\n"
|
|
"\n"
|
|
"options:\n"
|
|
" -d, --debug print debug messages to stderr\n"
|
|
" -e, --exclude PATTERN add the given exclude pattern\n"
|
|
" -h, --help show this help message and exit\n"
|
|
" -i, --ignore-case Ignore case differences between the patterns and the files\n"
|
|
" -o, --output FILE output the ignored files to a file (default: '-', i.e. stdout)\n"
|
|
" -p, --prefix PREFIX prefix added to each path (default: empty string)\n"
|
|
" -r, --rootdir DIR root of the source tree (default: current working directory)\n"
|
|
" -s, --stat FILE output the file stat of non-ignored files to a file\n",
|
|
progname);
|
|
}
|
|
|
|
static void open_output(const char *pathname, FILE **fp)
|
|
{
|
|
if (strcmp(pathname, "-")) {
|
|
*fp = fopen(pathname, "w");
|
|
if (!*fp)
|
|
perror_exit(pathname);
|
|
} else {
|
|
*fp = stdout;
|
|
}
|
|
}
|
|
|
|
static void close_output(const char *pathname, FILE *fp)
|
|
{
|
|
fflush(fp);
|
|
|
|
if (ferror(fp))
|
|
error_exit("not all data was written to the output\n");
|
|
|
|
if (fclose(fp))
|
|
perror_exit(pathname);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const char *output = "-";
|
|
const char *rootdir = ".";
|
|
const char *stat = NULL;
|
|
|
|
progname = strrchr(argv[0], '/');
|
|
if (progname)
|
|
progname++;
|
|
else
|
|
progname = argv[0];
|
|
|
|
while (1) {
|
|
static struct option long_options[] = {
|
|
{"debug", no_argument, NULL, 'd'},
|
|
{"help", no_argument, NULL, 'h'},
|
|
{"ignore-case", no_argument, NULL, 'i'},
|
|
{"output", required_argument, NULL, 'o'},
|
|
{"prefix", required_argument, NULL, 'p'},
|
|
{"rootdir", required_argument, NULL, 'r'},
|
|
{"stat", required_argument, NULL, 's'},
|
|
{"exclude", required_argument, NULL, 'x'},
|
|
{},
|
|
};
|
|
|
|
int c = getopt_long(argc, argv, "dhino:p:r:s:x:", long_options, NULL);
|
|
|
|
if (c == -1)
|
|
break;
|
|
|
|
switch (c) {
|
|
case 'd':
|
|
debug_on = true;
|
|
break;
|
|
case 'h':
|
|
usage();
|
|
exit(0);
|
|
case 'i':
|
|
ignore_case = true;
|
|
break;
|
|
case 'o':
|
|
output = optarg;
|
|
break;
|
|
case 'p':
|
|
prefix = optarg;
|
|
break;
|
|
case 'r':
|
|
rootdir = optarg;
|
|
break;
|
|
case 's':
|
|
stat = optarg;
|
|
break;
|
|
case 'x':
|
|
add_pattern(optarg, ".", strlen("."));
|
|
break;
|
|
case '?':
|
|
usage();
|
|
/* fallthrough */
|
|
default:
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
open_output(output, &out_fp);
|
|
if (stat && stat[0])
|
|
open_output(stat, &stat_fp);
|
|
|
|
if (chdir(rootdir))
|
|
perror_exit(rootdir);
|
|
|
|
add_pattern(".git/", ".", strlen("."));
|
|
|
|
if (traverse_directory(".", strlen(".")))
|
|
print_path("./");
|
|
|
|
assert(depth == 0);
|
|
|
|
while (nr_patterns > 0)
|
|
free(pattern_list[--nr_patterns]);
|
|
free(pattern_list);
|
|
free(nr_patterns_at);
|
|
|
|
close_output(output, out_fp);
|
|
if (stat_fp)
|
|
close_output(stat, stat_fp);
|
|
|
|
return 0;
|
|
}
|