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Some simple optimization of syntax highlighting engine.

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Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin 2009-12-24 12:16:27 +00:00
parent 39ddea87ee
commit b881a7b9ad
1 changed files with 41 additions and 35 deletions
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76
edit/syntax.c
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@ -133,7 +133,7 @@ destroy_defines (GTree **defines)
{
g_tree_traverse (*defines, mc_defines_destroy, G_POST_ORDER, NULL);
g_tree_destroy (*defines);
*defines = 0;
*defines = NULL;
}
static void
@ -456,7 +456,7 @@ static struct syntax_rule edit_get_rule (WEdit * edit, long byte_index)
struct _syntax_marker *s;
s = edit->syntax_marker;
edit->syntax_marker = g_malloc0 (sizeof (struct _syntax_marker));
edit->syntax_marker = g_malloc (sizeof (struct _syntax_marker));
edit->syntax_marker->next = s;
edit->syntax_marker->offset = i;
edit->syntax_marker->rule = edit->rule;
@ -479,7 +479,7 @@ static struct syntax_rule edit_get_rule (WEdit * edit, long byte_index)
break;
}
s = edit->syntax_marker->next;
MC_PTR_FREE (edit->syntax_marker);
g_free (edit->syntax_marker);
edit->syntax_marker = s;
}
}
@ -490,20 +490,19 @@ static struct syntax_rule edit_get_rule (WEdit * edit, long byte_index)
static inline void
translate_rule_to_color (WEdit * edit, struct syntax_rule rule, int *color)
{
struct key_word *k;
k = edit->rules[rule.context]->keyword[rule.keyword];
*color = k->color;
*color = edit->rules[rule.context]->keyword[rule.keyword]->color;
}
void edit_get_syntax_color (WEdit * edit, long byte_index, int *color)
void
edit_get_syntax_color (WEdit * edit, long byte_index, int *color)
{
if (edit->rules && byte_index < edit->last_byte &&
option_syntax_highlighting && tty_use_colors ()) {
if (!tty_use_colors ())
*color = 0;
else if (edit->rules && byte_index < edit->last_byte &&
option_syntax_highlighting)
translate_rule_to_color (edit, edit_get_rule (edit, byte_index), color);
} else {
*color = tty_use_colors () ? mc_skin_color_get("editor", "_default_") : 0;
}
else
*color = EDITOR_NORMAL_COLOR;
}
@ -512,12 +511,18 @@ void edit_get_syntax_color (WEdit * edit, long byte_index, int *color)
including the newline. Result must be free'd.
In case of an error, *line will not be modified.
*/
static int read_one_line (char **line, FILE * f)
static size_t
read_one_line (char **line, FILE *f)
{
GString *p = g_string_new ("");
int c, r = 0;
GString *p;
size_t r = 0;
/* not reallocate string too often */
p = g_string_sized_new (64);
for (;;) {
int c;
c = fgetc (f);
if (c == EOF) {
if (ferror (f)) {
@ -528,25 +533,26 @@ static int read_one_line (char **line, FILE * f)
break;
}
r++;
/* handle all of \r\n, \r, \n correctly. */
if (c == '\n')
break;
if (c == '\r') {
if ( (c = fgetc (f)) == '\n')
c = fgetc (f);
if (c == '\n')
r++;
else
ungetc (c, f);
break;
}
if (c == '\n')
break;
g_string_append_c (p, c);
}
if (r != 0) {
*line = p->str;
g_string_free (p, FALSE);
} else {
if (r != 0)
*line = g_string_free (p, FALSE);
else
g_string_free (p, TRUE);
}
return r;
}
@ -705,14 +711,14 @@ static FILE *open_include_file (const char *filename)
static int
edit_read_syntax_rules (WEdit *edit, FILE *f, char **args, int args_size)
{
FILE *g = 0;
FILE *g = NULL;
char *fg, *bg;
char last_fg[32] = "", last_bg[32] = "";
char whole_right[512];
char whole_left[512];
char *l = 0;
int save_line = 0, line = 0;
struct context_rule **r, *c = 0;
struct context_rule **r, *c = NULL;
int num_words = -1, num_contexts = -1;
int result = 0;
int argc;
@ -736,7 +742,7 @@ edit_read_syntax_rules (WEdit *edit, FILE *f, char **args, int args_size)
line++;
l = 0;
if (!read_one_line (&l, f)) {
if (read_one_line (&l, f) == 0) {
if (g) {
fclose (f);
f = g;
@ -744,7 +750,7 @@ edit_read_syntax_rules (WEdit *edit, FILE *f, char **args, int args_size)
line = save_line + 1;
MC_PTR_FREE (error_file_name);
MC_PTR_FREE (l);
if (!read_one_line (&l, f))
if (read_one_line (&l, f) == 0)
break;
} else {
break;
@ -963,7 +969,7 @@ edit_read_syntax_rules (WEdit *edit, FILE *f, char **args, int args_size)
{
char *first_chars, *p;
first_chars = g_malloc (max_alloc_words_per_context + 2);
first_chars = g_malloc0 (max_alloc_words_per_context + 2);
for (i = 0; edit->rules[i]; i++) {
c = edit->rules[i];
@ -981,9 +987,10 @@ edit_read_syntax_rules (WEdit *edit, FILE *f, char **args, int args_size)
return result;
}
void edit_free_syntax_rules (WEdit * edit)
void
edit_free_syntax_rules (WEdit * edit)
{
int i, j;
size_t i, j;
if (!edit)
return;
@ -994,7 +1001,6 @@ void edit_free_syntax_rules (WEdit * edit)
edit_get_rule (edit, -1);
MC_PTR_FREE (edit->syntax_type);
edit->syntax_type = 0;
for (i = 0; edit->rules[i]; i++) {
if (edit->rules[i]->keyword) {
@ -1016,7 +1022,7 @@ void edit_free_syntax_rules (WEdit * edit)
while (edit->syntax_marker) {
struct _syntax_marker *s = edit->syntax_marker->next;
MC_PTR_FREE (edit->syntax_marker);
g_free (edit->syntax_marker);
edit->syntax_marker = s;
}
@ -1032,7 +1038,7 @@ edit_read_syntax_file (WEdit * edit, char ***pnames, const char *syntax_file,
{
#define NENTRIES 30
FILE *f, *g = NULL;
char *args[1024], *l = 0;
char *args[1024], *l = NULL;
int line = 0;
int result = 0;
int count = 0;
@ -1053,7 +1059,7 @@ edit_read_syntax_file (WEdit * edit, char ***pnames, const char *syntax_file,
for (;;) {
line++;
MC_PTR_FREE (l);
if (!read_one_line (&l, f))
if (read_one_line (&l, f) == 0)
break;
(void)get_args (l, args, 1023); /* Final NULL */
if (!args[0])