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| author | Danny van Kooten <dannyvankooten@users.noreply.github.com> | 2020-03-13 11:26:48 +0100 |
|---|---|---|
| committer | Danny van Kooten <dannyvankooten@users.noreply.github.com> | 2020-03-13 11:26:48 +0100 |
| commit | 1e8fa138696f28cf712d50d85b91afce1faec655 (patch) | |
| tree | 74f33703c9ec2e26ce3359b536529fe488ba3265 /src | |
| parent | c9a5143b2aa9b92d1fbff4c804f058cf0e84f953 (diff) | |
| download | unja-1e8fa138696f28cf712d50d85b91afce1faec655.tar.gz unja-1e8fa138696f28cf712d50d85b91afce1faec655.zip | |
add whitespace control for statements
Diffstat (limited to 'src')
| -rw-r--r-- | src/template.c | 44 |
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, |