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-rw-r--r--src/template.c44
1 files changed, 39 insertions, 5 deletions
diff --git a/src/template.c b/src/template.c
index 51c9a77..56abc6d 100644
--- a/src/template.c
+++ b/src/template.c
@@ -26,8 +26,35 @@ char *read_file(char *filename) {
return input;
}
+char *trim_trailing_whitespace(char *str) {
+ for (int i=strlen(str)-1; isspace(str[i]); i--) {
+ str[i] = '\0';
+ }
+ return str;
+}
+
+char *trim_leading_whitespace(char *str) {
+ while (isspace(*str)) {
+ str++;
+ }
+
+ return str;
+}
+
int eval(char *dest, mpc_ast_t* t, struct hashmap *ctx) {
+ static int trim_whitespace = 0;
+
if (strstr(t->tag, "content|var")) {
+ // maybe eat whitespace going backward
+ if (strstr(t->children[0]->contents, "{{-")) {
+ dest = trim_trailing_whitespace(dest);
+ }
+
+ // set flag for next eval() to trim leading whitespace from text
+ if (strstr(t->children[2]->contents, "-}}")) {
+ trim_whitespace = 1;
+ }
+
char *value = NULL;
char *key = t->children[1]->contents;
value = hashmap_resolve(ctx, key);
@@ -52,7 +79,13 @@ int eval(char *dest, mpc_ast_t* t, struct hashmap *ctx) {
}
if (strstr(t->tag, "content|text")) {
- strcat(dest, t->contents);
+ char *str = t->contents;
+ if (trim_whitespace) {
+ str = trim_leading_whitespace(str);
+ trim_whitespace = 0;
+ }
+
+ strcat(dest, str);
return 0;
}
@@ -65,8 +98,8 @@ int eval(char *dest, mpc_ast_t* t, struct hashmap *ctx) {
mpc_parser_t *parser_init() {
mpc_parser_t *Symbol = mpc_new("symbol");
- mpc_parser_t *Symbols = mpc_new("symbols");
mpc_parser_t *Text = mpc_new("text");
+ mpc_parser_t *Whitespace = mpc_new("whitespace");
mpc_parser_t *Var_Open = mpc_new("var_open");
mpc_parser_t *Var_Close = mpc_new("var_close");
mpc_parser_t *Var = mpc_new("var");
@@ -81,8 +114,9 @@ mpc_parser_t *parser_init() {
mpc_parser_t *Template = mpc_new("template");
mpca_lang(MPCA_LANG_WHITESPACE_SENSITIVE,
" symbol : /[a-zA-Z_.]+/ ;"
- " var_open : /\{{2} ?/ ;"
- " var_close : / ?}{2}/ ;"
+ " whitespace: \"-\"; "
+ " var_open : /\{{2}-? ?/ ;"
+ " var_close : / ?-?}{2}/ ;"
" var : <var_open> <symbol> <var_close> ;"
" block_open: /\{\% ?/ ;"
" block_close: / ?\%}/ ;"
@@ -95,7 +129,7 @@ mpc_parser_t *parser_init() {
" body : <content>* ;"
" template : /^/ <body> /$/ ;",
Symbol,
- Symbols,
+ Whitespace,
Var_Open,
Var_Close,
Var,