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From 7a7c776a4e228d180e74614fd8c8afcad5d4bdf7 Mon Sep 17 00:00:00 2001
From: Jakub Martisko <jamartis@redhat.com>
Date: Thu, 7 Jul 2016 12:53:26 +0200
Subject: [PATCH] coreutils-i18n-un-expand-BOM.patch
---
src/expand-common.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++
src/expand-common.h | 12 ++++++
src/expand.c | 45 +++++++++++++++++++-
src/unexpand.c | 43 ++++++++++++++++++-
tests/expand/mb.sh | 71 ++++++++++++++++++++++++++++++++
tests/unexpand/mb.sh | 59 ++++++++++++++++++++++++++
6 files changed, 342 insertions(+), 2 deletions(-)
diff --git a/src/expand-common.c b/src/expand-common.c
index 4657e46..97cbb09 100644
--- a/src/expand-common.c
+++ b/src/expand-common.c
@@ -19,6 +19,7 @@
#include <assert.h>
#include <stdio.h>
#include <sys/types.h>
+#include <mbfile.h>
#include "system.h"
#include "die.h"
#include "error.h"
@@ -126,6 +127,119 @@ set_increment_size (uintmax_t tabval)
return ok;
}
+extern int
+set_utf_locale (void)
+{
+ /*try using some predefined locale */
+ const char* predef_locales[] = {"C.UTF8","en_US.UTF8","en_GB.UTF8"};
+
+ const int predef_locales_count=3;
+ for (int i=0;i<predef_locales_count;i++)
+ {
+ if (setlocale(LC_ALL,predef_locales[i])!=NULL)
+ {
+ break;
+ }
+ else if (i==predef_locales_count-1)
+ {
+ return 1;
+ error (EXIT_FAILURE, errno, _("cannot set UTF-8 locale"));
+ }
+ }
+ return 0;
+}
+
+extern bool
+check_utf_locale(void)
+{
+ char* locale = setlocale (LC_CTYPE , NULL);
+ if (locale == NULL)
+ {
+ return false;
+ }
+ else if (strcasestr(locale, "utf8") == NULL && strcasestr(locale, "utf-8") == NULL)
+ {
+ return false;
+ }
+ return true;
+}
+
+extern bool
+check_bom(FILE* fp, mb_file_t *mbf)
+{
+ int c;
+
+
+ c=fgetc(fp);
+
+ /*test BOM header of the first file */
+ mbf->bufcount=0;
+ if (c == 0xEF)
+ {
+ c=fgetc(fp);
+ }
+ else
+ {
+ if (c != EOF)
+ {
+ ungetc(c,fp);
+ }
+ return false;
+ }
+
+ if (c == 0xBB)
+ {
+ c=fgetc(fp);
+ }
+ else
+ {
+ if ( c!= EOF )
+ {
+ mbf->buf[0]=(unsigned char) 0xEF;
+ mbf->bufcount=1;
+ ungetc(c,fp);
+ return false;
+ }
+ else
+ {
+ ungetc(0xEF,fp);
+ return false;
+ }
+ }
+ if (c == 0xBF)
+ {
+ mbf->bufcount=0;
+ return true;
+ }
+ else
+ {
+ if (c != EOF)
+ {
+ mbf->buf[0]=(unsigned char) 0xEF;
+ mbf->buf[1]=(unsigned char) 0xBB;
+ mbf->bufcount=2;
+ ungetc(c,fp);
+ return false;
+ }
+ else
+ {
+ mbf->buf[0]=(unsigned char) 0xEF;
+ mbf->bufcount=1;
+ ungetc(0xBB,fp);
+ return false;
+ }
+ }
+ return false;
+}
+
+extern void
+print_bom(void)
+{
+ putc (0xEF, stdout);
+ putc (0xBB, stdout);
+ putc (0xBF, stdout);
+}
+
/* Add the comma or blank separated list of tab stops STOPS
to the list of tab stops. */
extern void
diff --git a/src/expand-common.h b/src/expand-common.h
index 8cb2079..763bfda 100644
--- a/src/expand-common.h
+++ b/src/expand-common.h
@@ -34,6 +34,18 @@ extern size_t max_column_width;
/* The desired exit status. */
extern int exit_status;
+extern int
+set_utf_locale (void);
+
+extern bool
+check_utf_locale(void);
+
+extern bool
+check_bom(FILE* fp, mb_file_t *mbf);
+
+extern void
+print_bom(void);
+
/* Add tab stop TABVAL to the end of 'tab_list'. */
extern void
add_tab_stop (uintmax_t tabval);
diff --git a/src/expand.c b/src/expand.c
index 310b349..4136824 100644
--- a/src/expand.c
+++ b/src/expand.c
@@ -103,11 +103,33 @@ expand (void)
FILE *fp = next_file (NULL);
mb_file_t mbf;
mbf_char_t c;
+ /* True if the starting locale is utf8. */
+ bool using_utf_locale;
+
+ /* True if the first file contains BOM header. */
+ bool found_bom;
+ using_utf_locale=check_utf_locale();
if (!fp)
return;
-
mbf_init (mbf, fp);
+ found_bom=check_bom(fp,&mbf);
+
+ if (using_utf_locale == false && found_bom == true)
+ {
+ /*try using some predefined locale */
+
+ if (set_utf_locale () != 0)
+ {
+ error (EXIT_FAILURE, errno, _("cannot set UTF-8 locale"));
+ }
+ }
+
+
+ if (found_bom == true)
+ {
+ print_bom();
+ }
while (true)
{
@@ -132,6 +154,27 @@ expand (void)
if ((mb_iseof (c)) && (fp = next_file (fp)))
{
mbf_init (mbf, fp);
+ if (fp!=NULL)
+ {
+ if (check_bom(fp,&mbf)==true)
+ {
+ /*Not the first file - check BOM header*/
+ if (using_utf_locale==false && found_bom==false)
+ {
+ /*BOM header in subsequent file but not in the first one. */
+ error (EXIT_FAILURE, errno, _("combination of files with and without BOM header"));
+ }
+ }
+ else
+ {
+ if(using_utf_locale==false && found_bom==true)
+ {
+ /*First file conatined BOM header - locale was switched to UTF
+ *all subsequent files should contain BOM. */
+ error (EXIT_FAILURE, errno, _("combination of files with and without BOM header"));
+ }
+ }
+ }
continue;
}
else
diff --git a/src/unexpand.c b/src/unexpand.c
index 863a90a..5681b58 100644
--- a/src/unexpand.c
+++ b/src/unexpand.c
@@ -116,16 +116,36 @@ unexpand (void)
include characters other than spaces, so the blanks must be
stored, not merely counted. */
mbf_char_t *pending_blank;
+ /* True if the starting locale is utf8. */
+ bool using_utf_locale;
+
+ /* True if the first file contains BOM header. */
+ bool found_bom;
+ using_utf_locale=check_utf_locale();
if (!fp)
return;
+ mbf_init (mbf, fp);
+ found_bom=check_bom(fp,&mbf);
+
+ if (using_utf_locale == false && found_bom == true)
+ {
+ /*try using some predefined locale */
+ if (set_utf_locale () != 0)
+ {
+ error (EXIT_FAILURE, errno, _("cannot set UTF-8 locale"));
+ }
+ }
/* The worst case is a non-blank character, then one blank, then a
tab stop, then MAX_COLUMN_WIDTH - 1 blanks, then a non-blank; so
allocate MAX_COLUMN_WIDTH bytes to store the blanks. */
pending_blank = xmalloc (max_column_width * sizeof (mbf_char_t));
- mbf_init (mbf, fp);
+ if (found_bom == true)
+ {
+ print_bom();
+ }
while (true)
{
@@ -169,6 +189,27 @@ unexpand (void)
if ((mb_iseof (c)) && (fp = next_file (fp)))
{
mbf_init (mbf, fp);
+ if (fp!=NULL)
+ {
+ if (check_bom(fp,&mbf)==true)
+ {
+ /*Not the first file - check BOM header*/
+ if (using_utf_locale==false && found_bom==false)
+ {
+ /*BOM header in subsequent file but not in the first one. */
+ error (EXIT_FAILURE, errno, _("combination of files with and without BOM header"));
+ }
+ }
+ else
+ {
+ if(using_utf_locale==false && found_bom==true)
+ {
+ /*First file conatined BOM header - locale was switched to UTF
+ *all subsequent files should contain BOM. */
+ error (EXIT_FAILURE, errno, _("combination of files with and without BOM header"));
+ }
+ }
+ }
continue;
}
else
diff --git a/tests/expand/mb.sh b/tests/expand/mb.sh
index 031be7a..1621c84 100755
--- a/tests/expand/mb.sh
+++ b/tests/expand/mb.sh
@@ -109,4 +109,75 @@ env printf '12345678
expand < in > out || fail=1
compare exp out > /dev/null 2>&1 || fail=1
+
+
+#BOM header test 1
+printf "\xEF\xBB\xBF" > in; cat <<\EOF >> in || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+EOF
+env printf ' äöü\t. öüä. \tä xx\n' >> in || framework_failure_
+
+printf "\xEF\xBB\xBF" > exp; cat <<\EOF >> exp || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+
+expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LANG=C expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LC_ALL=C expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+
+printf '\xEF\xBB\xBF' > in1; cat <<\EOF >> in1 || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+EOF
+env printf ' äöü\t. öüä. \tä xx\n' >> in1 || framework_failure_
+
+
+printf '\xEF\xBB\xBF' > exp; cat <<\EOF >> exp || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+expand in1 in1 > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LANG=C expand in1 in1 > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LC_ALL=C expand in1 in1 > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
exit $fail
diff --git a/tests/unexpand/mb.sh b/tests/unexpand/mb.sh
index 8d75652..9d4ee3e 100755
--- a/tests/unexpand/mb.sh
+++ b/tests/unexpand/mb.sh
@@ -111,3 +111,62 @@ env printf '12345678
unexpand -a < in > out || fail=1
compare exp out > /dev/null 2>&1 || fail=1
+
+#BOM header test 1
+printf "\xEF\xBB\xBF" > in; cat <<\EOF >> in || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+env printf ' äöü\t. öüä. \tä xx\n' >> in || framework_failure_
+
+printf "\xEF\xBB\xBF" > exp; cat <<\EOF >> exp || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+unexpand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LANG=C unexpand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LC_ALL=C unexpand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+
+printf "\xEF\xBB\xBF" > exp; cat <<\EOF >> exp || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+
+unexpand in in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LANG=C unexpand in in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+LC_ALL=C unexpand in in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
--
2.9.3
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