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-rw-r--r--color.c592
-rwxr-xr-xtests.sh10
-rw-r--r--tests/test_color_escapes.outbin0 -> 713 bytes
-rw-r--r--tests/test_color_rs_lc_rc_ec.out20
4 files changed, 426 insertions, 196 deletions
diff --git a/color.c b/color.c
index 29a87e1..8bcd69b 100644
--- a/color.c
+++ b/color.c
@@ -16,6 +16,7 @@
#include "color.h"
#include "bftw.h"
+#include "dstring.h"
#include "posix1e.h"
#include "stat.h"
#include "trie.h"
@@ -34,106 +35,91 @@
* The parsed form of LS_COLORS.
*/
struct colors {
- const char *reset;
- const char *bold;
- const char *gray;
- const char *red;
- const char *green;
- const char *yellow;
- const char *blue;
- const char *magenta;
- const char *cyan;
-
- const char *normal;
- const char *file;
- const char *dir;
- const char *link;
- const char *multi_hard;
- const char *pipe;
- const char *door;
- const char *block;
- const char *chardev;
- const char *orphan;
- const char *missing;
- const char *socket;
- const char *setuid;
- const char *setgid;
- const char *capable;
- const char *sticky_ow;
- const char *ow;
- const char *sticky;
- const char *exec;
-
- const char *warning;
- const char *error;
-
+ char *reset;
+ char *leftcode;
+ char *rightcode;
+ char *endcode;
+ char *clear_to_eol;
+
+ char *bold;
+ char *gray;
+ char *red;
+ char *green;
+ char *yellow;
+ char *blue;
+ char *magenta;
+ char *cyan;
+ char *white;
+
+ char *warning;
+ char *error;
+
+ char *normal;
+
+ char *file;
+ char *multi_hard;
+ char *executable;
+ char *capable;
+ char *setgid;
+ char *setuid;
+
+ char *directory;
+ char *sticky;
+ char *other_writable;
+ char *sticky_other_writable;
+
+ char *link;
+ char *orphan;
+ char *missing;
+
+ char *blockdev;
+ char *chardev;
+ char *door;
+ char *pipe;
+ char *socket;
+
+ /** A mapping from color names (fi, di, ln, etc.) to struct fields. */
+ struct trie names;
+
+ /** A mapping from file extensions to colors. */
struct trie ext_colors;
-
- char *data;
};
-/**
- * A named color for parsing and lookup.
- */
-struct color_name {
- const char *name;
- size_t offset;
-};
-
-#define COLOR_NAME(name, field) {name, offsetof(struct colors, field)}
+/** Initialize a color in the table. */
+static int init_color(struct colors *colors, const char *name, const char *value, char **field) {
+ if (value) {
+ *field = dstrdup(value);
+ if (!*field) {
+ return -1;
+ }
+ } else {
+ *field = NULL;
+ }
-/**
- * All the known color names that can be referenced in LS_COLORS.
- */
-static const struct color_name color_names[] = {
- COLOR_NAME("bd", block),
- COLOR_NAME("bld", bold),
- COLOR_NAME("blu", blue),
- COLOR_NAME("ca", capable),
- COLOR_NAME("cd", chardev),
- COLOR_NAME("cyn", cyan),
- COLOR_NAME("di", dir),
- COLOR_NAME("do", door),
- COLOR_NAME("er", error),
- COLOR_NAME("ex", exec),
- COLOR_NAME("fi", file),
- COLOR_NAME("grn", green),
- COLOR_NAME("gry", gray),
- COLOR_NAME("ln", link),
- COLOR_NAME("mag", magenta),
- COLOR_NAME("mh", multi_hard),
- COLOR_NAME("mi", missing),
- COLOR_NAME("no", normal),
- COLOR_NAME("or", orphan),
- COLOR_NAME("ow", ow),
- COLOR_NAME("pi", pipe),
- COLOR_NAME("red", red),
- COLOR_NAME("rs", reset),
- COLOR_NAME("sg", setgid),
- COLOR_NAME("so", socket),
- COLOR_NAME("st", sticky),
- COLOR_NAME("su", setuid),
- COLOR_NAME("tw", sticky_ow),
- COLOR_NAME("wr", warning),
- COLOR_NAME("ylw", yellow),
- {0},
-};
+ struct trie_leaf *leaf = trie_insert_str(&colors->names, name);
+ if (leaf) {
+ leaf->value = field;
+ return 0;
+ } else {
+ return -1;
+ }
+}
/** Get a color from the table. */
-static const char **get_color(const struct colors *colors, const char *name) {
- for (const struct color_name *entry = color_names; entry->name; ++entry) {
- if (strcmp(name, entry->name) == 0) {
- return (const char **)((char *)colors + entry->offset);
- }
+static char **get_color(const struct colors *colors, const char *name) {
+ const struct trie_leaf *leaf = trie_find_str(&colors->names, name);
+ if (leaf) {
+ return (char **)leaf->value;
+ } else {
+ return NULL;
}
-
- return NULL;
}
/** Set the value of a color. */
-static void set_color(struct colors *colors, const char *name, const char *value) {
- const char **color = get_color(colors, name);
+static void set_color(struct colors *colors, const char *name, char *value) {
+ char **color = get_color(colors, name);
if (color) {
+ dstrfree(*color);
*color = value;
}
}
@@ -141,52 +127,42 @@ static void set_color(struct colors *colors, const char *name, const char *value
/**
* Transform a file extension for fast lookups, by reversing and lowercasing it.
*/
-static char *extxfrm(const char *ext) {
+static void extxfrm(char *ext) {
size_t len = strlen(ext);
- char *ret = malloc(len + 1);
- if (!ret) {
- return NULL;
- }
-
- for (size_t i = 0; i < len; ++i) {
- char c = ext[len - i - 1];
+ for (size_t i = 0; i < len - i; ++i) {
+ char a = ext[i];
+ char b = ext[len - i - 1];
// What's internationalization? Doesn't matter, this is what
// GNU ls does. Luckily, since there's no standard C way to
// casefold. Not using tolower() here since it respects the
- // current locale.
- if (c >= 'A' && c <= 'Z') {
- c += 'a' - 'A';
+ // current locale, which GNU ls doesn't do.
+ if (a >= 'A' && a <= 'Z') {
+ a += 'a' - 'A';
+ }
+ if (b >= 'A' && b <= 'Z') {
+ b += 'a' - 'A';
}
- ret[i] = c;
+ ext[i] = b;
+ ext[len - i - 1] = a;
}
-
- ret[len] = '\0';
- return ret;
}
/**
* Set the color for an extension.
*/
-static int set_ext_color(struct colors *colors, const char *key, const char *value) {
- char *xfrm = extxfrm(key);
- if (!xfrm) {
- return -1;
- }
-
- while (true) {
- // A later *.x should override any earlier *.x, *.y.x, etc.
- struct trie_leaf *match = trie_find_postfix(&colors->ext_colors, xfrm);
- if (!match) {
- break;
- }
+static int set_ext_color(struct colors *colors, char *key, const char *value) {
+ extxfrm(key);
+ // A later *.x should override any earlier *.x, *.y.x, etc.
+ struct trie_leaf *match;
+ while ((match = trie_find_postfix(&colors->ext_colors, key))) {
+ dstrfree(match->value);
trie_remove_mem(&colors->ext_colors, match->key, match->length);
}
- struct trie_leaf *leaf = trie_insert_str(&colors->ext_colors, xfrm);
- free(xfrm);
+ struct trie_leaf *leaf = trie_insert_str(&colors->ext_colors, key);
if (leaf) {
leaf->value = (char *)value;
return 0;
@@ -199,10 +175,11 @@ static int set_ext_color(struct colors *colors, const char *key, const char *val
* Find a color by an extension.
*/
static const char *get_ext_color(const struct colors *colors, const char *filename) {
- char *xfrm = extxfrm(filename);
+ char *xfrm = strdup(filename);
if (!xfrm) {
return NULL;
}
+ extxfrm(xfrm);
const struct trie_leaf *leaf = trie_find_prefix(&colors->ext_colors, xfrm);
free(xfrm);
@@ -213,92 +190,292 @@ static const char *get_ext_color(const struct colors *colors, const char *filena
}
}
+/**
+ * Parse a chunk of LS_COLORS that may have escape sequences. The supported
+ * escapes are:
+ *
+ * \a, \b, \f, \n, \r, \t, \v:
+ * As in C
+ * \e:
+ * ESC (\033)
+ * \?:
+ * DEL (\177)
+ * \_:
+ * ' ' (space)
+ * \NNN:
+ * Octal
+ * \xNN:
+ * Hex
+ * ^C:
+ * Control character.
+ *
+ * See man dir_colors.
+ *
+ * @param value
+ * The value to parse.
+ * @param end
+ * The character that marks the end of the chunk.
+ * @param[out] next
+ * Will be set to the next chunk.
+ * @return
+ * The parsed chunk as a dstring.
+ */
+static char *unescape(const char *value, char end, const char **next) {
+ char *str = dstralloc(0);
+ if (!str) {
+ goto fail;
+ }
+
+ const char *i;
+ for (i = value; *i && *i != end; ++i) {
+ unsigned char c = 0;
+
+ switch (*i) {
+ case '\\':
+ switch (*++i) {
+ case 'a':
+ c = '\a';
+ break;
+ case 'b':
+ c = '\b';
+ break;
+ case 'e':
+ c = '\033';
+ break;
+ case 'f':
+ c = '\f';
+ break;
+ case 'n':
+ c = '\n';
+ break;
+ case 'r':
+ c = '\r';
+ break;
+ case 't':
+ c = '\t';
+ break;
+ case 'v':
+ c = '\v';
+ break;
+ case '?':
+ c = '\177';
+ break;
+ case '_':
+ c = ' ';
+ break;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ while (i[1] >= '0' && i[1] <= '7') {
+ c <<= 3;
+ c |= *i++ - '0';
+ }
+ c <<= 3;
+ c |= *i - '0';
+ break;
+
+ case 'X':
+ case 'x':
+ while (true) {
+ if (i[1] >= '0' && i[1] <= '9') {
+ c <<= 4;
+ c |= i[1] - '0';
+ } else if (i[1] >= 'A' && i[1] <= 'F') {
+ c <<= 4;
+ c |= i[1] - 'A' + 0xA;
+ } else if (i[1] >= 'a' && i[1] <= 'f') {
+ c <<= 4;
+ c |= i[1] - 'a' + 0xA;
+ } else {
+ break;
+ }
+ ++i;
+ }
+ break;
+
+ case '\0':
+ goto fail;
+
+ default:
+ c = *i;
+ break;
+ }
+ break;
+
+ case '^':
+ switch (*++i) {
+ case '?':
+ c = '\177';
+ break;
+ case '\0':
+ goto fail;
+ default:
+ // CTRL masks bits 6 and 7
+ c = *i & 0x1F;
+ break;
+ }
+ break;
+
+ default:
+ c = *i;
+ break;
+ }
+
+ if (dstrapp(&str, c) != 0) {
+ goto fail;
+ }
+ }
+
+ if (*i) {
+ *next = i + 1;
+ } else {
+ *next = NULL;
+ }
+
+ return str;
+
+fail:
+ dstrfree(str);
+ *next = NULL;
+ return NULL;
+}
+
struct colors *parse_colors(const char *ls_colors) {
struct colors *colors = malloc(sizeof(struct colors));
if (!colors) {
- goto done;
+ return NULL;
}
- // From man console_codes
- colors->reset = "0";
- colors->bold = "01";
- colors->gray = "01;30";
- colors->red = "01;31";
- colors->green = "01;32";
- colors->yellow = "01;33";
- colors->blue = "01;34";
- colors->magenta = "01;35";
- colors->cyan = "01;36";
-
- // Defaults generated by dircolors --print-database
- colors->normal = NULL;
- colors->file = NULL;
- colors->dir = "01;34";
- colors->link = "01;36";
- colors->multi_hard = NULL;
- colors->pipe = "33";
- colors->socket = "01;35";
- colors->door = "01;35";
- colors->block = "01;33";
- colors->chardev = "01;33";
- colors->orphan = NULL;
- colors->missing = NULL;
- colors->setuid = "37;41";
- colors->setgid = "30;43";
- colors->capable = "30;41";
- colors->sticky_ow = "30;42";
- colors->ow = "34;42";
- colors->sticky = "37;44";
- colors->exec = "01;32";
- colors->warning = "01;33";
- colors->error = "01;31";
- colors->data = NULL;
-
+ trie_init(&colors->names);
trie_init(&colors->ext_colors);
- if (ls_colors) {
- colors->data = strdup(ls_colors);
- }
+ int ret = 0;
- if (!colors->data) {
- goto done;
- }
+ // From man console_codes
- for (char *chunk = colors->data, *next; chunk; chunk = next) {
- next = strchr(chunk, ':');
- if (next) {
- *next++ = '\0';
- }
+ ret |= init_color(colors, "rs", "0", &colors->reset);
+ ret |= init_color(colors, "lc", "\033[", &colors->leftcode);
+ ret |= init_color(colors, "rc", "m", &colors->rightcode);
+ ret |= init_color(colors, "ec", NULL, &colors->endcode);
+ ret |= init_color(colors, "cl", "\033[K", &colors->clear_to_eol);
+
+ ret |= init_color(colors, "bld", "01", &colors->bold);
+ ret |= init_color(colors, "gry", "01;30", &colors->gray);
+ ret |= init_color(colors, "red", "01;31", &colors->red);
+ ret |= init_color(colors, "grn", "01;32", &colors->green);
+ ret |= init_color(colors, "ylw", "01;33", &colors->yellow);
+ ret |= init_color(colors, "blu", "01;34", &colors->blue);
+ ret |= init_color(colors, "mag", "01;35", &colors->magenta);
+ ret |= init_color(colors, "cyn", "01;36", &colors->cyan);
+ ret |= init_color(colors, "wht", "01;37", &colors->white);
+
+ ret |= init_color(colors, "wr", "01;33", &colors->warning);
+ ret |= init_color(colors, "er", "01;31", &colors->error);
+
+ // Defaults from man dir_colors
+
+ ret |= init_color(colors, "no", NULL, &colors->normal);
+
+ ret |= init_color(colors, "fi", NULL, &colors->file);
+ ret |= init_color(colors, "mh", NULL, &colors->multi_hard);
+ ret |= init_color(colors, "ex", "01;32", &colors->executable);
+ ret |= init_color(colors, "ca", "30;41", &colors->capable);
+ ret |= init_color(colors, "sg", "30;43", &colors->setgid);
+ ret |= init_color(colors, "su", "37;41", &colors->setuid);
+
+ ret |= init_color(colors, "di", "01;34", &colors->directory);
+ ret |= init_color(colors, "st", "37;44", &colors->sticky);
+ ret |= init_color(colors, "ow", "34;42", &colors->other_writable);
+ ret |= init_color(colors, "tw", "30;42", &colors->sticky_other_writable);
+
+ ret |= init_color(colors, "ln", "01;36", &colors->link);
+ ret |= init_color(colors, "or", NULL, &colors->orphan);
+ ret |= init_color(colors, "mi", NULL, &colors->missing);
+
+ ret |= init_color(colors, "bd", "01;33", &colors->blockdev);
+ ret |= init_color(colors, "cd", "01;33", &colors->chardev);
+ ret |= init_color(colors, "do", "01;35", &colors->door);
+ ret |= init_color(colors, "pi", "33", &colors->pipe);
+ ret |= init_color(colors, "so", "01;35", &colors->socket);
+
+ if (ret) {
+ free_colors(colors);
+ return NULL;
+ }
- char *equals = strchr(chunk, '=');
- if (!equals) {
- continue;
- }
- *equals = '\0';
+ for (const char *chunk = ls_colors, *next; chunk; chunk = next) {
+ if (chunk[0] == '*') {
+ char *key = unescape(chunk + 1, '=', &next);
+ if (!key) {
+ continue;
+ }
- const char *key = chunk;
- const char *value = equals + 1;
+ char *value = unescape(next, ':', &next);
+ if (value) {
+ if (set_ext_color(colors, key, value) != 0) {
+ dstrfree(value);
+ }
+ }
- if (key[0] == '*') {
- set_ext_color(colors, key + 1, value);
+ dstrfree(key);
} else {
+ const char *equals = strchr(chunk, '=');
+ if (!equals) {
+ break;
+ }
+
+ char *key = strndup(chunk, equals - chunk);
+ if (!key) {
+ continue;
+ }
+
+ char *value = unescape(equals + 1, ':', &next);
+ if (!value) {
+ free(key);
+ continue;
+ }
+
// All-zero values should be treated like NULL, to fall
// back on any other relevant coloring for that file
- if (strcmp(key, "rs") != 0 && strspn(value, "0") == strlen(value)) {
+ if (strspn(value, "0") == strlen(value)
+ && strcmp(key, "rs") != 0
+ && strcmp(key, "lc") != 0
+ && strcmp(key, "rc") != 0
+ && strcmp(key, "ec") != 0) {
+ dstrfree(value);
value = NULL;
}
+
set_color(colors, key, value);
+ free(key);
}
}
-done:
return colors;
}
void free_colors(struct colors *colors) {
if (colors) {
+ struct trie_leaf *leaf;
+ while ((leaf = trie_first_leaf(&colors->ext_colors))) {
+ dstrfree(leaf->value);
+ trie_remove_mem(&colors->ext_colors, leaf->key, leaf->length);
+ }
trie_destroy(&colors->ext_colors);
- free(colors->data);
+
+ while ((leaf = trie_first_leaf(&colors->names))) {
+ char **field = leaf->value;
+ dstrfree(*field);
+ trie_remove_mem(&colors->names, leaf->key, leaf->length);
+ }
+ trie_destroy(&colors->names);
+
free(colors);
}
}
@@ -376,8 +553,8 @@ static const char *file_color(const struct colors *colors, const char *filename,
color = colors->setgid;
} else if (colors->capable && bfs_check_capabilities(ftwbuf)) {
color = colors->capable;
- } else if (colors->exec && (sb->mode & 00111)) {
- color = colors->exec;
+ } else if (colors->executable && (sb->mode & 00111)) {
+ color = colors->executable;
} else if (colors->multi_hard && sb->nlink > 1) {
color = colors->multi_hard;
}
@@ -393,14 +570,14 @@ static const char *file_color(const struct colors *colors, const char *filename,
break;
case S_IFDIR:
- if (colors->sticky_ow && (sb->mode & 01002) == 01002) {
- color = colors->sticky_ow;
- } else if (colors->ow && (sb->mode & 00002)) {
- color = colors->ow;
+ if (colors->sticky_other_writable && (sb->mode & 01002) == 01002) {
+ color = colors->sticky_other_writable;
+ } else if (colors->other_writable && (sb->mode & 00002)) {
+ color = colors->other_writable;
} else if (colors->sticky && (sb->mode & 01000)) {
color = colors->sticky;
} else {
- color = colors->dir;
+ color = colors->directory;
}
break;
@@ -414,7 +591,7 @@ static const char *file_color(const struct colors *colors, const char *filename,
break;
case S_IFBLK:
- color = colors->block;
+ color = colors->blockdev;
break;
case S_IFCHR:
color = colors->chardev;
@@ -440,33 +617,56 @@ static const char *file_color(const struct colors *colors, const char *filename,
return color;
}
+/** Print a fixed-length string. */
+static int print_strn(const char *str, size_t len, FILE *file) {
+ if (fwrite(str, 1, len, file) == len) {
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+/** Print a dstring. */
+static int print_dstr(const char *str, FILE *file) {
+ return print_strn(str, dstrlen(str), file);
+}
+
/** Print an ANSI escape sequence. */
-static int print_esc(const char *esc, FILE *file) {
- if (fputs("\033[", file) == EOF) {
+static int print_esc(const struct colors *colors, const char *esc, FILE *file) {
+ if (print_dstr(colors->leftcode, file) != 0) {
return -1;
}
- if (fputs(esc, file) == EOF) {
+ if (print_dstr(esc, file) != 0) {
return -1;
}
- if (fputs("m", file) == EOF) {
+ if (print_dstr(colors->rightcode, file) != 0) {
return -1;
}
return 0;
}
+/** Reset after an ANSI escape sequence. */
+static int print_reset(const struct colors *colors, FILE *file) {
+ if (colors->endcode) {
+ return print_dstr(colors->endcode, file);
+ } else {
+ return print_esc(colors, colors->reset, file);
+ }
+}
+
/** Print a string with an optional color. */
static int print_colored(const struct colors *colors, const char *esc, const char *str, size_t len, FILE *file) {
if (esc) {
- if (print_esc(esc, file) != 0) {
+ if (print_esc(colors, esc, file) != 0) {
return -1;
}
}
- if (fwrite(str, 1, len, file) != len) {
+ if (print_strn(str, len, file) != 0) {
return -1;
}
if (esc) {
- if (print_esc(colors->reset, file) != 0) {
+ if (print_reset(colors, file) != 0) {
return -1;
}
}
@@ -485,7 +685,7 @@ static int print_path(CFILE *cfile, const struct BFTW *ftwbuf) {
}
if (ftwbuf->nameoff > 0) {
- if (print_colored(colors, colors->dir, path, ftwbuf->nameoff, file) != 0) {
+ if (print_colored(colors, colors->directory, path, ftwbuf->nameoff, file) != 0) {
return -1;
}
}
@@ -644,12 +844,12 @@ int cvfprintf(CFILE *cfile, const char *format, va_list args) {
memcpy(name, i, len);
name[len] = '\0';
- const char **esc = get_color(colors, name);
+ char **esc = get_color(colors, name);
if (!esc) {
goto invalid;
}
if (*esc) {
- if (print_esc(*esc, file) != 0) {
+ if (print_esc(colors, *esc, file) != 0) {
return -1;
}
}
diff --git a/tests.sh b/tests.sh
index bd3f399..187daff 100755
--- a/tests.sh
+++ b/tests.sh
@@ -626,6 +626,8 @@ bfs_tests=(
test_color
test_color_L
+ test_color_rs_lc_rc_ec
+ test_color_escapes
test_color_mh
test_color_mh0
test_color_or
@@ -1847,6 +1849,14 @@ function test_color_L() {
LS_COLORS= bfs_diff -L rainbow -color
}
+function test_color_rs_lc_rc_ec() {
+ LS_COLORS="rs=RS:lc=LC:rc=RC:ec=EC:" bfs_diff rainbow -color
+}
+
+function test_color_escapes() {
+ LS_COLORS="lc=\e[:rc=\x6d\::ec=^[[\x6D\0:" bfs_diff rainbow -color
+}
+
function test_color_mh() {
LS_COLORS="mh=01:" bfs_diff rainbow -color
}
diff --git a/tests/test_color_escapes.out b/tests/test_color_escapes.out
new file mode 100644
index 0000000..9f1c663
--- /dev/null
+++ b/tests/test_color_escapes.out
Binary files differ
diff --git a/tests/test_color_rs_lc_rc_ec.out b/tests/test_color_rs_lc_rc_ec.out
new file mode 100644
index 0000000..a71df24
--- /dev/null
+++ b/tests/test_color_rs_lc_rc_ec.out
@@ -0,0 +1,20 @@
+LC01;34RCrainbowEC
+LC01;34RCrainbow/ECLC01;32RCexec.shEC
+LC01;34RCrainbow/ECLC01;35RCsocketEC
+LC01;34RCrainbow/ECLC01;36RCbrokenEC
+LC01;34RCrainbow/ECLC01;36RCchardev_linkEC
+LC01;34RCrainbow/ECLC01;36RClink.txtEC
+LC01;34RCrainbow/ECLC30;42RCsticky_owEC
+LC01;34RCrainbow/ECLC30;43RCsgidEC
+LC01;34RCrainbow/ECLC33RCpipeEC
+LC01;34RCrainbow/ECLC34;42RCowEC
+LC01;34RCrainbow/ECLC37;41RCsugidEC
+LC01;34RCrainbow/ECLC37;41RCsuidEC
+LC01;34RCrainbow/ECLC37;44RCstickyEC
+LC01;34RCrainbow/ECfile.dat
+LC01;34RCrainbow/ECfile.txt
+LC01;34RCrainbow/ECmh1
+LC01;34RCrainbow/ECmh2
+LC01;34RCrainbow/ECstar.gz
+LC01;34RCrainbow/ECstar.tar
+LC01;34RCrainbow/ECstar.tar.gz
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 00:06:14 +0000