Merge branch 'master' of https://git.lain.church/emil/hl

source/hl.h

@@ -8,21 +8,6 @@
 // -------------------
 // ### Definitions ###
 // -------------------
-typedef void (*attribute_callback_t)(const char * const string,
-                                     const int          length,
-                                           void * const attributes);
-
-typedef struct {
-    char * key;
-	attribute_callback_t callback;
-    UT_hash_handle hh;
-} display_t;
-display_t * display_table = NULL;
-
-typedef struct {
-	void * attributes;
-	struct hl_group_t * link;
-} hl_group_t;
 
 typedef enum {
 	KEYSYMBOL,
@@ -32,63 +17,77 @@ typedef enum {
 } token_type_t;
 
 typedef struct {
-	hl_group_t * hl;
+	char                 * key;
-	token_type_t t;
+	attribute_callback_t   callback;
-	char* syntax;
+	UT_hash_handle         hh;
+} display_t;
+
+typedef struct {
+	void              * attributes;
+	struct hl_group_t * link;
+} hl_group_t;
+
+typedef struct {
+	hl_group_t   * hl;
+	token_type_t   t;
+	char         * syntax;
 } token_t;
 
-/* Temp solution
+typedef void (*attribute_callback_t) (const char * const string,
- *  this should be dynamic
+                                      const int          length,
- */
+                                            void * const attributes);
+
+// GLOBALS
+
 token_t * token_table[1000];
 int token_table_top = 0;
 
-
+display_t * display_table = NULL;
 
 // --------------------------------
 // ### Constructors/Destructors ###
 // --------------------------------
+
 void new_display_mode(display_t * mode) {
 	HASH_ADD_STR(display_table,
 	             key,
 	             mode);
 }
 
-int free_token(token_t * token){
+int free_token(token_t * token) {
-	/* XXX: since hl could be shared,
-	 * this might free an already freed object
-	 * when invoked from a loop
-	 */
 	free(token->hl);
 	free(token->syntax);
+
 	return 0;
 }
 
-int append_token(token_t * token){
+int append_token(token_t * token) {
 	token_table[token_table_top++] = token;
+
 	return 0;
 }
 
 token_t * new_symbol_token(const char         * const word,
                                  hl_group_t   * const    g) {
-
 	char * new_word = strdup(word);
 
 	token_t * mt = (token_t*)malloc(sizeof(token_t));
-	mt->hl = g;
-	mt->t = KEYSYMBOL;
-	mt->syntax = new_word;
-	append_token(mt);
-	return mt;
 
+	mt->hl     = g;
+	mt->t      = KEYSYMBOL;
+	mt->syntax = new_word;
+
+	append_token(mt);
+
+	return mt;
 }
 
 int new_symbol_tokens(const char       * const *     symbols,
                             hl_group_t * const             g) {
-
 	int i = 0;
+
 	while (*symbols) {
-		if(new_symbol_token(*symbols, g)){
+		if(new_symbol_token(*symbols, g)) {
 			++i;
 		}
 		++symbols;
@@ -99,40 +98,47 @@ int new_symbol_tokens(const char       * const *     symbols,
 
 int new_char_tokens(const char       *       characters,
                           hl_group_t * const          g) {
-	int i = 0;
+	int  i         = 0;
-	char buffer[2];
+	char buffer[2] = "";
+
 	buffer[1] = '\00';
-	for(const char * s = characters; *s != '\00'; s++){
+
+	for(const char * s = characters; *s != '\0'; s++) {
 		buffer[0] = *s;
-		if(new_symbol_token(buffer, g)){
+		if(new_symbol_token(buffer, g)) {
 			++i;
 		}
 	}
+
 	return i;
 }
 
 token_t * new_keyword_token(const char         * const word,
                                   hl_group_t   * const    g) {
+	size_t   word_length = strlen(word);
+	char   * new_word    = (char*)malloc(word_length + 4 + 1);
 
-	size_t word_length = strlen(word);
-	char * new_word = (char*)malloc(word_length + 4 + 1);
 	memcpy(new_word, "\\<", 2);
 	memcpy(new_word + 2, word, word_length);
 	strcpy(new_word + 2 + word_length, "\\>");
 
 	token_t * mt = (token_t*)malloc(sizeof(token_t));
-	mt->hl = g;
+
-	mt->t = KEYWORD;
+	mt->hl     = g;
+	mt->t      = KEYWORD;
 	mt->syntax = new_word;
+
 	append_token(mt);
+
 	return mt;
 }
 
-int new_keyword_tokens(const char       * const *       words,
+int new_keyword_tokens(const char       * const * words,
-                             hl_group_t * const             g) {
+                             hl_group_t * const   g) {
 	int i = 0;
+
 	while (*words) {
-		if(new_keyword_token(*words, g)){
+		if(new_keyword_token(*words, g)) {
 			++i;
 		}
 		++words;
@@ -144,36 +150,33 @@ int new_keyword_tokens(const char       * const *       words,
 token_t * new_token(const char         * const word,
                     const token_type_t            t,
                           hl_group_t   * const    g) {
-	switch(t){
+	switch (t) {
 		case KEYSYMBOL: {
 			return new_symbol_token(word, g);
-		};
+		}
 		case KEYWORD: {
 			return new_keyword_token(word, g);
-		};
+		}
 		case MATCH: {
 		} break;
 		case REGION: {
 		} break;
 	}
-	// XXX: implement the rest
+
 	return NULL;
 }
 
-
-
 // --------------------
 // ### Highlighting ###
 // --------------------
 
-int token_fits(const token_t *   const         token,
+int token_fits(const token_t * const       token,
-               const char    *   const            to,
+               const char    * const       to,
-               const int               string_offset,
+               const int                   string_offset,
-			         int     *          match_offset) {
+			             int * match_offset) {
-
 	const char * const pattern = token->syntax;
 
-	if (pattern == NULL) {
+	if (! pattern) {
 		return true;
 	}
 
@@ -182,14 +185,17 @@ int token_fits(const token_t *   const         token,
 }
 
 void render_string(const char * const string,
-                   const char * const   mode) {
+                   const char * const mode) {
 	for (const char * s = string; *s != '\00';) {
 		int f;
 		int token_index = 0;
 		int offset;
+
 		for (; token_index < token_table_top; token_index++) {
 			f = token_fits(token_table[token_index], string, s - string, &offset);
-			if(f){ break; }
+			if (f) {
+				break;
+			}
 		}
 		//
 		display_t * display;
@@ -198,10 +204,10 @@ void render_string(const char * const string,
 		              display);
 		//
 		if (f) {
-			for(int i = 0; i < offset; i++){
+			for (int i = 0; i < offset; i++) {
 				display->callback(s + i,
-								  0,
+				                  0,
-								  token_table[token_index]->hl->attributes);
+				                  token_table[token_index]->hl->attributes);
 			}
 			display->callback(s + offset,
 			                  f,
@@ -216,18 +222,18 @@ void render_string(const char * const string,
 	}
 }
 
-
-
 // -------------------------
 // ### Library Mangement ###
 // -------------------------
+
 int hl_init(void) {
 	return 0;
 }
 
 int hl_deinit(void) {
-	for(int i = 0; i < token_table_top; i++){
+	for (int i = 0; i < token_table_top; i++) {
 		free_token(token_table[i]);
 	}
+
 	return 0;
 }