#include <stdlib.h>
#include <string.h>
-#if HAVE_ICONV
-# include <iconv.h>
-#endif
#include "c-ctype.h"
-#include "streq.h"
-#include "xsize.h"
+#include "uniconv.h"
#include "unilbrk/ulc-common.h"
/* Line breaking of a string in an arbitrary encoding.
const char *o, const char *encoding,
char *p)
{
- if (n == 0)
- return start_column;
- if (is_utf8_encoding (encoding))
- return u8_width_linebreaks ((const uint8_t *) s, n, width, start_column, at_end_columns, o, encoding, p);
- else
+ if (n > 0)
{
-#if HAVE_ICONV
- iconv_t to_utf8;
- /* Avoid glibc-2.1 bug with EUC-KR. */
-# if (__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) && !defined _LIBICONV_VERSION
- if (STREQ (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0))
- to_utf8 = (iconv_t)(-1);
+ if (is_utf8_encoding (encoding))
+ return u8_width_linebreaks ((const uint8_t *) s, n, width, start_column, at_end_columns, o, encoding, p);
else
-# endif
- /* Avoid Solaris 9 bug with GB2312, EUC-TW, BIG5, BIG5-HKSCS, GBK,
- GB18030. */
-# if defined __sun && !defined _LIBICONV_VERSION
- if ( STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
- || STREQ (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0)
- || STREQ (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0)
- || STREQ (encoding, "BIG5-HKSCS", 'B', 'I', 'G', '5', '-', 'H', 'K', 'S', 'C')
- || STREQ (encoding, "GBK", 'G', 'B', 'K', 0, 0, 0, 0, 0, 0)
- || STREQ (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
- to_utf8 = (iconv_t)(-1);
- else
-# endif
- to_utf8 = iconv_open (UTF8_NAME, encoding);
- if (to_utf8 != (iconv_t)(-1))
{
- /* Determine the length of the resulting UTF-8 string. */
- size_t m = iconv_string_length (to_utf8, s, n);
- if (m != (size_t)(-1))
+ /* Convert the string to UTF-8 and build a translation table
+ from offsets into s to offsets into the translated string. */
+ size_t *offsets = (size_t *) malloc (n * sizeof (size_t));
+
+ if (offsets != NULL)
{
- /* Convert the string to UTF-8 and build a translation table
- from offsets into s to offsets into the translated string. */
- size_t memory_size =
- xsum4 (xtimes (n, sizeof (size_t)), m, m,
- (o != NULL ? m : 0));
- char *memory =
- (char *)
- (size_in_bounds_p (memory_size) ? malloc (memory_size) : NULL);
- if (memory != NULL)
+ uint8_t *t = NULL;
+ size_t m;
+ if (u8_conv_from_encoding (encoding, iconveh_question_mark,
+ s, n, offsets, &t, &m)
+ == 0)
{
- size_t *offtable = (size_t *) memory;
- char *t = (char *) (offtable + n);
- char *q = (char *) (t + m);
- char *o8 = (o != NULL ? (char *) (q + m) : NULL);
- int res_column;
- size_t i;
+ char *memory = (char *) malloc (m + (o != NULL ? m : 0));
- iconv_string_keeping_offsets (to_utf8, s, n, offtable, t, m);
-
- /* Translate the overrides to the UTF-8 string. */
- if (o != NULL)
+ if (memory != NULL)
{
- memset (o8, UC_BREAK_UNDEFINED, m);
+ char *q = (char *) memory;
+ char *o8 = (o != NULL ? (char *) (q + m) : NULL);
+ int res_column;
+ size_t i;
+
+ /* Translate the overrides to the UTF-8 string. */
+ if (o != NULL)
+ {
+ memset (o8, UC_BREAK_UNDEFINED, m);
+ for (i = 0; i < n; i++)
+ if (offsets[i] != (size_t)(-1))
+ o8[offsets[i]] = o[i];
+ }
+
+ /* Determine the line breaks of the UTF-8 string. */
+ res_column =
+ u8_width_linebreaks (t, m, width, start_column, at_end_columns, o8, encoding, q);
+
+ /* Translate the result back to the original string. */
+ memset (p, UC_BREAK_PROHIBITED, n);
for (i = 0; i < n; i++)
- if (offtable[i] != (size_t)(-1))
- o8[offtable[i]] = o[i];
- }
-
- /* Determine the line breaks of the UTF-8 string. */
- res_column =
- u8_width_linebreaks ((const uint8_t *) t, m, width, start_column, at_end_columns, o8, encoding, q);
-
- /* Translate the result back to the original string. */
- memset (p, UC_BREAK_PROHIBITED, n);
- for (i = 0; i < n; i++)
- if (offtable[i] != (size_t)(-1))
- p[i] = q[offtable[i]];
+ if (offsets[i] != (size_t)(-1))
+ p[i] = q[offsets[i]];
- free (memory);
- iconv_close (to_utf8);
- return res_column;
+ free (memory);
+ free (t);
+ free (offsets);
+ return res_column;
+ }
+ free (t);
}
+ free (offsets);
}
- iconv_close (to_utf8);
- }
-#endif
- /* Impossible to convert. */
+ /* Impossible to convert. */
#if C_CTYPE_ASCII
- if (is_all_ascii (s, n))
- {
- /* ASCII is a subset of UTF-8. */
- return u8_width_linebreaks ((const uint8_t *) s, n, width, start_column, at_end_columns, o, encoding, p);
- }
+ if (is_all_ascii (s, n))
+ {
+ /* ASCII is a subset of UTF-8. */
+ return u8_width_linebreaks ((const uint8_t *) s, n, width, start_column, at_end_columns, o, encoding, p);
+ }
#endif
- /* We have a non-ASCII string and cannot convert it.
- Don't produce line breaks except those already present in the
- input string. All we assume here is that the encoding is
- minimally ASCII compatible. */
- {
- const char *s_end = s + n;
- while (s < s_end)
+ /* We have a non-ASCII string and cannot convert it.
+ Don't produce line breaks except those already present in the
+ input string. All we assume here is that the encoding is
+ minimally ASCII compatible. */
{
- *p = ((o != NULL && *o == UC_BREAK_MANDATORY) || *s == '\n'
- ? UC_BREAK_MANDATORY
- : UC_BREAK_PROHIBITED);
- s++;
- p++;
- if (o != NULL)
- o++;
+ const char *s_end = s + n;
+ while (s < s_end)
+ {
+ *p = ((o != NULL && *o == UC_BREAK_MANDATORY) || *s == '\n'
+ ? UC_BREAK_MANDATORY
+ : UC_BREAK_PROHIBITED);
+ s++;
+ p++;
+ if (o != NULL)
+ o++;
+ }
+ /* We cannot compute widths in this case. */
}
- /* We cannot compute widths in this case. */
- return start_column;
- }
+ }
}
+ return start_column;
}
projects / gnulib.git / blobdiff