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-rw-r--r--readline/mbutil.c78
1 files changed, 57 insertions, 21 deletions
diff --git a/readline/mbutil.c b/readline/mbutil.c
index 50302f0..17dde53 100644
--- a/readline/mbutil.c
+++ b/readline/mbutil.c
@@ -1,6 +1,6 @@
/* mbutil.c -- readline multibyte character utility functions */
-/* Copyright (C) 2001 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2005 Free Software Foundation, Inc.
This file is part of the GNU Readline Library, a library for
reading lines of text with interactive input and history editing.
@@ -77,27 +77,29 @@ _rl_find_next_mbchar_internal (string, seed, count, find_non_zero)
char *string;
int seed, count, find_non_zero;
{
- size_t tmp = 0;
+ size_t tmp;
mbstate_t ps;
- int point = 0;
+ int point;
wchar_t wc;
+ tmp = 0;
+
memset(&ps, 0, sizeof (mbstate_t));
if (seed < 0)
seed = 0;
if (count <= 0)
return seed;
- point = seed + _rl_adjust_point(string, seed, &ps);
+ point = seed + _rl_adjust_point (string, seed, &ps);
/* if this is true, means that seed was not pointed character
started byte. So correct the point and consume count */
if (seed < point)
- count --;
+ count--;
while (count > 0)
{
tmp = mbrtowc (&wc, string+point, strlen(string + point), &ps);
- if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
+ if (MB_INVALIDCH ((size_t)tmp))
{
/* invalid bytes. asume a byte represents a character */
point++;
@@ -105,9 +107,8 @@ _rl_find_next_mbchar_internal (string, seed, count, find_non_zero)
/* reset states. */
memset(&ps, 0, sizeof(mbstate_t));
}
- else if (tmp == (size_t)0)
- /* found '\0' char */
- break;
+ else if (MB_NULLWCH (tmp))
+ break; /* found wide '\0' */
else
{
/* valid bytes */
@@ -127,15 +128,16 @@ _rl_find_next_mbchar_internal (string, seed, count, find_non_zero)
if (find_non_zero)
{
tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
- while (wcwidth (wc) == 0)
+ while (tmp > 0 && wcwidth (wc) == 0)
{
point += tmp;
tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps);
- if (tmp == (size_t)(0) || tmp == (size_t)(-1) || tmp == (size_t)(-2))
+ if (MB_NULLWCH (tmp) || MB_INVALIDCH (tmp))
break;
}
}
- return point;
+
+ return point;
}
static int
@@ -160,7 +162,7 @@ _rl_find_prev_mbchar_internal (string, seed, find_non_zero)
while (point < seed)
{
tmp = mbrtowc (&wc, string + point, length - point, &ps);
- if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
+ if (MB_INVALIDCH ((size_t)tmp))
{
/* in this case, bytes are invalid or shorted to compose
multibyte char, so assume that the first byte represents
@@ -169,8 +171,12 @@ _rl_find_prev_mbchar_internal (string, seed, find_non_zero)
/* clear the state of the byte sequence, because
in this case effect of mbstate is undefined */
memset(&ps, 0, sizeof (mbstate_t));
+
+ /* Since we're assuming that this byte represents a single
+ non-zero-width character, don't forget about it. */
+ prev = point;
}
- else if (tmp == 0)
+ else if (MB_NULLWCH (tmp))
break; /* Found '\0' char. Can this happen? */
else
{
@@ -205,14 +211,16 @@ _rl_get_char_len (src, ps)
if (tmp == (size_t)(-2))
{
/* shorted to compose multibyte char */
- memset (ps, 0, sizeof(mbstate_t));
+ if (ps)
+ memset (ps, 0, sizeof(mbstate_t));
return -2;
}
else if (tmp == (size_t)(-1))
{
/* invalid to compose multibyte char */
/* initialize the conversion state */
- memset (ps, 0, sizeof(mbstate_t));
+ if (ps)
+ memset (ps, 0, sizeof(mbstate_t));
return -1;
}
else if (tmp == (size_t)0)
@@ -225,9 +233,12 @@ _rl_get_char_len (src, ps)
return 1. Otherwise return 0. */
int
_rl_compare_chars (buf1, pos1, ps1, buf2, pos2, ps2)
- char *buf1, *buf2;
- mbstate_t *ps1, *ps2;
- int pos1, pos2;
+ char *buf1;
+ int pos1;
+ mbstate_t *ps1;
+ char *buf2;
+ int pos2;
+ mbstate_t *ps2;
{
int i, w1, w2;
@@ -268,7 +279,7 @@ _rl_adjust_point(string, point, ps)
while (pos < point)
{
tmp = mbrlen (string + pos, length - pos, ps);
- if((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2)
+ if (MB_INVALIDCH ((size_t)tmp))
{
/* in this case, bytes are invalid or shorted to compose
multibyte char, so assume that the first byte represents
@@ -276,8 +287,11 @@ _rl_adjust_point(string, point, ps)
pos++;
/* clear the state of the byte sequence, because
in this case effect of mbstate is undefined */
- memset (ps, 0, sizeof (mbstate_t));
+ if (ps)
+ memset (ps, 0, sizeof (mbstate_t));
}
+ else if (MB_NULLWCH (tmp))
+ pos++;
else
pos += tmp;
}
@@ -302,6 +316,28 @@ _rl_is_mbchar_matched (string, seed, end, mbchar, length)
return 0;
return 1;
}
+
+wchar_t
+_rl_char_value (buf, ind)
+ char *buf;
+ int ind;
+{
+ size_t tmp;
+ wchar_t wc;
+ mbstate_t ps;
+ int l;
+
+ if (MB_LEN_MAX == 1 || rl_byte_oriented)
+ return ((wchar_t) buf[ind]);
+ l = strlen (buf);
+ if (ind >= l - 1)
+ return ((wchar_t) buf[ind]);
+ memset (&ps, 0, sizeof (mbstate_t));
+ tmp = mbrtowc (&wc, buf + ind, l - ind, &ps);
+ if (MB_INVALIDCH (tmp) || MB_NULLWCH (tmp))
+ return ((wchar_t) buf[ind]);
+ return wc;
+}
#endif /* HANDLE_MULTIBYTE */
/* Find next `count' characters started byte point of the specified seed.