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authorDenys Vlasenko2010-01-04 20:49:58 +0100
committerDenys Vlasenko2010-01-04 20:49:58 +0100
commit28055028a709020ba7eb44f9e5037d0a952b51d6 (patch)
treebb5dc7052f04e66ad74bbbcc9917d638cd603b24 /coreutils
parentd2b1ba6fdee59645763e915ade3ec55e67d5839a (diff)
downloadbusybox-28055028a709020ba7eb44f9e5037d0a952b51d6.zip
busybox-28055028a709020ba7eb44f9e5037d0a952b51d6.tar.gz
fold: unicode support. Based on a patch by Tomas Heinrich <heinrich.tomas@gmail.com>
General Unicode support is tweaked to expose unicode_status. function old new delta init_unicode - 77 +77 write2stdout - 19 +19 adjust_column 68 71 +3 unicode_status - 1 +1 unicode_is_enabled 1 - -1 grep_main 780 773 -7 fold_main 619 552 -67 check_unicode_in_env 77 - -77 ------------------------------------------------------------------------------ (add/remove: 3/2 grow/shrink: 1/2 up/down: 100/-152) Total: -52 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/df.c2
-rw-r--r--coreutils/expand.c2
-rw-r--r--coreutils/fold.c161
-rw-r--r--coreutils/ls.c2
4 files changed, 91 insertions, 76 deletions
diff --git a/coreutils/df.c b/coreutils/df.c
index 83794ad..bcde783 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -58,7 +58,7 @@ int df_main(int argc UNUSED_PARAM, char **argv)
const char *disp_units_hdr = NULL;
char *chp;
- check_unicode_in_env();
+ init_unicode();
#if ENABLE_FEATURE_HUMAN_READABLE && ENABLE_FEATURE_DF_FANCY
opt_complementary = "k-mB:m-Bk:B-km";
diff --git a/coreutils/expand.c b/coreutils/expand.c
index e08eb1d..649b4c1 100644
--- a/coreutils/expand.c
+++ b/coreutils/expand.c
@@ -144,7 +144,7 @@ int expand_main(int argc UNUSED_PARAM, char **argv)
"all\0" No_argument "a"
;
#endif
- check_unicode_in_env();
+ init_unicode();
if (ENABLE_EXPAND && (!ENABLE_UNEXPAND || applet_name[0] == 'e')) {
IF_FEATURE_EXPAND_LONG_OPTIONS(applet_long_options = expand_longopts);
diff --git a/coreutils/fold.c b/coreutils/fold.c
index 56a3466..cbea31f 100644
--- a/coreutils/fold.c
+++ b/coreutils/fold.c
@@ -9,8 +9,8 @@
Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-
#include "libbb.h"
+#include "unicode.h"
/* Must match getopt32 call */
#define FLAG_COUNT_BYTES 1
@@ -20,39 +20,53 @@
/* Assuming the current column is COLUMN, return the column that
printing C will move the cursor to.
The first column is 0. */
-static int adjust_column(int column, char c)
+static int adjust_column(unsigned column, char c)
{
- if (!(option_mask32 & FLAG_COUNT_BYTES)) {
- if (c == '\b') {
- if (column > 0)
- column--;
- } else if (c == '\r')
+ if (option_mask32 & FLAG_COUNT_BYTES)
+ return ++column;
+
+ if (c == '\t')
+ return column + 8 - column % 8;
+
+ if (c == '\b') {
+ if ((int)--column < 0)
column = 0;
- else if (c == '\t')
- column = column + 8 - column % 8;
- else /* if (isprint(c)) */
+ }
+ else if (c == '\r')
+ column = 0;
+ else { /* just a printable char */
+ if (unicode_status != UNICODE_ON /* every byte is a new char */
+ || (c & 0xc0) != 0x80 /* it isn't a 2nd+ byte of a Unicode char */
+ ) {
column++;
- } else
- column++;
+ }
+ }
return column;
}
+/* Note that this function can write NULs, unlike fputs etc. */
+static void write2stdout(const void *buf, unsigned size)
+{
+ fwrite(buf, 1, size, stdout);
+}
+
int fold_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int fold_main(int argc UNUSED_PARAM, char **argv)
{
char *line_out = NULL;
- int allocated_out = 0;
- char *w_opt;
- int width = 80;
- int i;
- int errs = 0;
+ const char *w_opt = "80";
+ unsigned width;
+ smallint exitcode = EXIT_SUCCESS;
+
+ init_unicode();
if (ENABLE_INCLUDE_SUSv2) {
/* Turn any numeric options into -w options. */
+ int i;
for (i = 1; argv[i]; i++) {
- char const *a = argv[i];
-
- if (*a++ == '-') {
+ const char *a = argv[i];
+ if (*a == '-') {
+ a++;
if (*a == '-' && !a[1]) /* "--" */
break;
if (isdigit(*a))
@@ -62,8 +76,7 @@ int fold_main(int argc UNUSED_PARAM, char **argv)
}
getopt32(argv, "bsw:", &w_opt);
- if (option_mask32 & FLAG_WIDTH)
- width = xatoul_range(w_opt, 1, 10000);
+ width = xatou_range(w_opt, 1, 10000);
argv += optind;
if (!*argv)
@@ -72,79 +85,81 @@ int fold_main(int argc UNUSED_PARAM, char **argv)
do {
FILE *istream = fopen_or_warn_stdin(*argv);
int c;
- int column = 0; /* Screen column where next char will go. */
- int offset_out = 0; /* Index in 'line_out' for next char. */
+ unsigned column = 0; /* Screen column where next char will go */
+ unsigned offset_out = 0; /* Index in 'line_out' for next char */
if (istream == NULL) {
- errs |= EXIT_FAILURE;
+ exitcode = EXIT_FAILURE;
continue;
}
while ((c = getc(istream)) != EOF) {
- if (offset_out + 1 >= allocated_out) {
- allocated_out += 1024;
- line_out = xrealloc(line_out, allocated_out);
+ /* We grow line_out in chunks of 0x1000 bytes */
+ if ((offset_out & 0xfff) == 0) {
+ line_out = xrealloc(line_out, offset_out + 0x1000);
}
-
+ rescan:
+ line_out[offset_out] = c;
if (c == '\n') {
- line_out[offset_out++] = c;
- fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
+ write2stdout(line_out, offset_out + 1);
column = offset_out = 0;
continue;
}
- rescan:
column = adjust_column(column, c);
+ if (column <= width || offset_out == 0) {
+ /* offset_out == 0 case happens
+ * with small width (say, 1) and tabs.
+ * The very first tab already goes to column 8,
+ * but we must not wrap it */
+ offset_out++;
+ continue;
+ }
- if (column > width) {
- /* This character would make the line too long.
- Print the line plus a newline, and make this character
- start the next line. */
- if (option_mask32 & FLAG_BREAK_SPACES) {
- /* Look for the last blank. */
- int logical_end;
-
- for (logical_end = offset_out - 1; logical_end >= 0; logical_end--) {
- if (isblank(line_out[logical_end])) {
- break;
- }
+ /* This character would make the line too long.
+ * Print the line plus a newline, and make this character
+ * start the next line */
+ if (option_mask32 & FLAG_BREAK_SPACES) {
+ unsigned i;
+ unsigned logical_end;
+
+ /* Look for the last blank. */
+ for (logical_end = offset_out - 1; (int)logical_end >= 0; logical_end--) {
+ if (!isblank(line_out[logical_end]))
+ continue;
+
+ /* Found a space or tab.
+ * Output up to and including it, and start a new line */
+ logical_end++;
+ /*line_out[logical_end] = '\n'; - NO! this nukes one buffered character */
+ write2stdout(line_out, logical_end);
+ putchar('\n');
+ /* Move the remainder to the beginning of the next line.
+ * The areas being copied here might overlap. */
+ memmove(line_out, line_out + logical_end, offset_out - logical_end);
+ offset_out -= logical_end;
+ for (column = i = 0; i < offset_out; i++) {
+ column = adjust_column(column, line_out[i]);
}
- if (logical_end >= 0) {
- /* Found a blank. Don't output the part after it. */
- logical_end++;
- fwrite(line_out, sizeof(char), (size_t) logical_end, stdout);
- bb_putchar('\n');
- /* Move the remainder to the beginning of the next line.
- The areas being copied here might overlap. */
- memmove(line_out, line_out + logical_end, offset_out - logical_end);
- offset_out -= logical_end;
- for (column = i = 0; i < offset_out; i++) {
- column = adjust_column(column, line_out[i]);
- }
- goto rescan;
- }
- }
- if (offset_out == 0) {
- line_out[offset_out++] = c;
- continue;
+ goto rescan;
}
- line_out[offset_out++] = '\n';
- fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
- column = offset_out = 0;
- goto rescan;
+ /* No blank found, wrap will split the overlong word */
}
-
- line_out[offset_out++] = c;
- }
+ /* Output what we accumulated up to now, and start a new line */
+ line_out[offset_out] = '\n';
+ write2stdout(line_out, offset_out + 1);
+ column = offset_out = 0;
+ goto rescan;
+ } /* while (not EOF) */
if (offset_out) {
- fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
+ write2stdout(line_out, offset_out);
}
if (fclose_if_not_stdin(istream)) {
- bb_simple_perror_msg(*argv); /* Avoid multibyte problems. */
- errs |= EXIT_FAILURE;
+ bb_simple_perror_msg(*argv);
+ exitcode = EXIT_FAILURE;
}
} while (*++argv);
- fflush_stdout_and_exit(errs);
+ fflush_stdout_and_exit(exitcode);
}
diff --git a/coreutils/ls.c b/coreutils/ls.c
index 13c863c..5ea3a0b 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -945,7 +945,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
INIT_G();
- check_unicode_in_env();
+ init_unicode();
all_fmt = LIST_SHORT |
(ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));