emil/libhl
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Code

auto esc magic char tokens

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This commit is contained in:
anon 2023-08-24 04:11:46 +02:00
parent ed22849143
commit 94b151462a
3 changed files with 35 additions and 18 deletions

31
source/hl.h

@ -34,7 +34,7 @@ typedef struct {
typedef struct {
hl_group_t * hl;
token_type_t t;
char * syntax;
regex_t * syntax;
} token_t;
// GLOBALS
@ -56,7 +56,7 @@ void new_display_mode(display_t * mode) {
int free_token(token_t * token) {
free(token->hl);
free(token->syntax);
regex_free(token->syntax);
return 0;
}
@ -67,15 +67,23 @@ int append_token(token_t * token) {
return 0;
}
token_t * new_symbol_token(const char * const word,
hl_group_t * const g) {
char * new_word = strdup(word);
token_t * new_symbol_token(const char * const c,
hl_group_t * const g) {
char * new_word;
if (is_magic(*c)) {
new_word = (char *)malloc(sizeof(char)*3);
new_word[0] = '\\';
new_word[1] = *c;
new_word[2] = '\00';
} else {
new_word = strdup(c);
}
token_t * mt = (token_t*)malloc(sizeof(token_t));
mt->hl = g;
mt->t = KEYSYMBOL;
mt->syntax = new_word;
mt->syntax = regex_compile(new_word);
append_token(mt);
@ -126,7 +134,7 @@ token_t * new_keyword_token(const char * const word,
mt->hl = g;
mt->t = KEYWORD;
mt->syntax = new_word;
mt->syntax = regex_compile(new_word);
append_token(mt);
@ -173,15 +181,10 @@ token_t * new_token(const char * const word,
int token_fits(const token_t * const token,
const char * const to,
const int string_offset,
int * match_offset) {
const char * const pattern = token->syntax;
if (! pattern) {
return true;
}
int * match_offset) {
//return regex_match(pattern, to, string_offset, match_offset);
return regex_search(NULL, pattern + string_offset);
return regex_search(token->syntax, to + string_offset);
}
void render_string(const char * const string,

20
source/regex.c

@ -33,7 +33,7 @@ typedef struct {
s += n; \
} while (0)
bool is_quantifier(const char c){
static bool is_quantifier(const char c) {
for (const char * s = "+*?"; *s != '\00'; s++) {
if (*s == c) {
return true;
@ -42,8 +42,20 @@ bool is_quantifier(const char c){
return false;
}
bool is_magic(const char c) {
if (is_quantifier(c)) {
return true;
}
for (const char * s = "\\[]"; *s != '\00'; s++) {
if (*s == c) {
return true;
}
}
return false;
}
int escape_1_to_1(const char c, char * whitelist) {
static int escape_1_to_1(const char c, char * whitelist) {
switch(c) {
case 't': {
strcat(whitelist, "\t");
@ -83,7 +95,7 @@ int escape_1_to_1(const char c, char * whitelist) {
return 0;
}
int escape_1_to_N(const char c, char * whitelist) {
static int escape_1_to_N(const char c, char * whitelist) {
switch(c) {
case 'i': {
const char identifier_chars[] = "@0123456789_\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337";
@ -175,7 +187,7 @@ int escape_1_to_N(const char c, char * whitelist) {
return 0;
}
int compile_range(const char * const range,
static int compile_range(const char * const range,
char * whitelist) {
assert(range[0] == '[' && "Not a range.");

2
source/regex.h

@ -17,4 +17,6 @@ extern regex_t * regex_compile(const char * const pattern);
extern bool regex_search(regex_t * regex, const char * const string);
extern int regex_free(regex_t * const regex);
extern bool is_magic(const char c);
#endif