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diffview: refactoring of dview_get_byte() and dview_get_utf().

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Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin 2016-03-30 11:52:34 +03:00
parent 2d77cb32f9
commit 8cd8dbeb58
1 changed files with 48 additions and 53 deletions
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101
src/diffviewer/ydiff.c
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@ -554,20 +554,19 @@ p_close (FBUF * fs)
/**
* Get one char (byte) from string
*
* @param char * str, gboolean * result
* @return int as character or 0 and result == FALSE if fail
* @param str ...
* @param ch ...
* @return TRUE on success, FALSE otherwise
*/
static int
dview_get_byte (char *str, gboolean * result)
static gboolean
dview_get_byte (const char *str, int *ch)
{
if (str == NULL)
{
*result = FALSE;
return 0;
}
*result = TRUE;
return (unsigned char) *str;
return FALSE;
*ch = (unsigned char) (*str);
return TRUE;
}
/* --------------------------------------------------------------------------------------------- */
@ -576,40 +575,35 @@ dview_get_byte (char *str, gboolean * result)
/**
* Get utf multibyte char from string
*
* @param char * str, int * char_length, gboolean * result
* @return int as utf character or 0 and result == FALSE if fail
* @param str ...
* @param ch ...
* @param ch_length ...
* @return TRUE on success, FALSE otherwise
*/
static int
dview_get_utf (const char *str, int *char_length, gboolean * result)
static gboolean
dview_get_utf (const char *str, int *ch, int *ch_length)
{
int res = -1;
gunichar ch;
int ch_len = 0;
*result = TRUE;
if (str == NULL)
return FALSE;
*ch = g_utf8_get_char_validated (str, -1);
if (*ch < 0)
{
*result = FALSE;
return 0;
*ch = (unsigned char) (*str);
*ch_length = 1;
}
res = g_utf8_get_char_validated (str, -1);
if (res < 0)
ch = *str;
else
{
gchar *next_ch;
char *next_ch;
ch = res;
/* Calculate UTF-8 char length */
next_ch = g_utf8_next_char (str);
ch_len = next_ch - str;
*ch_length = next_ch - str;
}
*char_length = ch_len;
return ch;
return TRUE;
}
/* --------------------------------------------------------------------------------------------- */
@ -1414,13 +1408,13 @@ cvt_mget (const char *src, size_t srcsize, char *dst, int dstsize, int skip, int
else if (skip > 0)
{
#ifdef HAVE_CHARSET
gboolean res;
int ch_len = 1;
int ch = 0;
int ch_length = 1;
(void) dview_get_utf ((char *) src, &ch_len, &res);
(void) dview_get_utf (src, &ch, &ch_length);
if (ch_len > 1)
skip += ch_len - 1;
if (ch_length > 1)
skip += ch_length - 1;
#endif
skip--;
@ -1517,12 +1511,12 @@ cvt_mgeta (const char *src, size_t srcsize, char *dst, int dstsize, int skip, in
else if (skip != 0)
{
#ifdef HAVE_CHARSET
gboolean res;
int ch_len = 1;
int ch = 0;
int ch_length = 1;
(void) dview_get_utf ((char *) src, &ch_len, &res);
if (ch_len > 1)
skip += ch_len - 1;
(void) dview_get_utf (src, &ch, &ch_length);
if (ch_length > 1)
skip += ch_length - 1;
#endif
skip--;
@ -2570,7 +2564,7 @@ dview_display_file (const WDiff * dview, diff_place_t ord, int r, int c, int hei
for (i = dview->skip_rows, j = 0; i < dview->a[ord]->len && j < height; j++, i++)
{
int ch, next_ch, col;
int ch, next_ch = 0, col;
size_t cnt;
p = (DIFFLN *) & g_array_index (dview->a[ord], DIFFLN, i);
@ -2620,17 +2614,17 @@ dview_display_file (const WDiff * dview, diff_place_t ord, int r, int c, int hei
#ifdef HAVE_CHARSET
if (dview->utf8)
{
int ch_len = 0;
int ch_length = 0;
next_ch = dview_get_utf (buf + cnt, &ch_len, &ch_res);
if (ch_len > 1)
cnt += ch_len - 1;
ch_res = dview_get_utf (buf + cnt, &next_ch, &ch_length);
if (ch_length > 1)
cnt += ch_length - 1;
if (!g_unichar_isprint (next_ch))
next_ch = '.';
}
else
#endif
next_ch = dview_get_byte (buf + cnt, &ch_res);
ch_res = dview_get_byte (buf + cnt, &next_ch);
if (ch_res)
{
@ -2697,17 +2691,18 @@ dview_display_file (const WDiff * dview, diff_place_t ord, int r, int c, int hei
#ifdef HAVE_CHARSET
if (dview->utf8)
{
int ch_len = 0;
int ch_length = 0;
next_ch = dview_get_utf (buf + cnt, &ch_len, &ch_res);
if (ch_len > 1)
cnt += ch_len - 1;
ch_res = dview_get_utf (buf + cnt, &next_ch, &ch_length);
if (ch_length > 1)
cnt += ch_length - 1;
if (!g_unichar_isprint (next_ch))
next_ch = '.';
}
else
#endif
next_ch = dview_get_byte (buf + cnt, &ch_res);
ch_res = dview_get_byte (buf + cnt, &next_ch);
if (ch_res)
{
#ifdef HAVE_CHARSET