diff options
Diffstat (limited to 'libs/web/src/template_parser.c')
-rw-r--r-- | libs/web/src/template_parser.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/libs/web/src/template_parser.c b/libs/web/src/template_parser.c deleted file mode 100644 index 6054451315..0000000000 --- a/libs/web/src/template_parser.c +++ /dev/null @@ -1,386 +0,0 @@ -/* - * LuCI Template - Parser implementation - * - * Copyright (C) 2009-2012 Jo-Philipp Wich <xm@subsignal.org> - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "template_parser.h" -#include "template_utils.h" -#include "template_lmo.h" - - -/* leading and trailing code for different types */ -const char *gen_code[9][2] = { - { NULL, NULL }, - { "write(\"", "\")" }, - { NULL, NULL }, - { "write(tostring(", " or \"\"))" }, - { "include(\"", "\")" }, - { "write(\"", "\")" }, - { "write(\"", "\")" }, - { NULL, " " }, - { NULL, NULL }, -}; - -/* Simple strstr() like function that takes len arguments for both haystack and needle. */ -static char *strfind(char *haystack, int hslen, const char *needle, int ndlen) -{ - int match = 0; - int i, j; - - for( i = 0; i < hslen; i++ ) - { - if( haystack[i] == needle[0] ) - { - match = ((ndlen == 1) || ((i + ndlen) <= hslen)); - - for( j = 1; (j < ndlen) && ((i + j) < hslen); j++ ) - { - if( haystack[i+j] != needle[j] ) - { - match = 0; - break; - } - } - - if( match ) - return &haystack[i]; - } - } - - return NULL; -} - -struct template_parser * template_open(const char *file) -{ - struct stat s; - static struct template_parser *parser; - - if (!(parser = malloc(sizeof(*parser)))) - goto err; - - memset(parser, 0, sizeof(*parser)); - parser->fd = -1; - parser->file = file; - - if (stat(file, &s)) - goto err; - - if ((parser->fd = open(file, O_RDONLY)) < 0) - goto err; - - parser->size = s.st_size; - parser->mmap = mmap(NULL, parser->size, PROT_READ, MAP_PRIVATE, - parser->fd, 0); - - if (parser->mmap != MAP_FAILED) - { - parser->off = parser->mmap; - parser->cur_chunk.type = T_TYPE_INIT; - parser->cur_chunk.s = parser->mmap; - parser->cur_chunk.e = parser->mmap; - - return parser; - } - -err: - template_close(parser); - return NULL; -} - -void template_close(struct template_parser *parser) -{ - if (!parser) - return; - - if (parser->gc != NULL) - free(parser->gc); - - if ((parser->mmap != NULL) && (parser->mmap != MAP_FAILED)) - munmap(parser->mmap, parser->size); - - if (parser->fd >= 0) - close(parser->fd); - - free(parser); -} - -void template_text(struct template_parser *parser, const char *e) -{ - const char *s = parser->off; - - if (s < (parser->mmap + parser->size)) - { - if (parser->strip_after) - { - while ((s <= e) && isspace(*s)) - s++; - } - - parser->cur_chunk.type = T_TYPE_TEXT; - } - else - { - parser->cur_chunk.type = T_TYPE_EOF; - } - - parser->cur_chunk.line = parser->line; - parser->cur_chunk.s = s; - parser->cur_chunk.e = e; -} - -void template_code(struct template_parser *parser, const char *e) -{ - const char *s = parser->off; - - parser->strip_before = 0; - parser->strip_after = 0; - - if (*s == '-') - { - parser->strip_before = 1; - for (s++; (s <= e) && (*s == ' ' || *s == '\t'); s++); - } - - if (*(e-1) == '-') - { - parser->strip_after = 1; - for (e--; (e >= s) && (*e == ' ' || *e == '\t'); e--); - } - - switch (*s) - { - /* comment */ - case '#': - s++; - parser->cur_chunk.type = T_TYPE_COMMENT; - break; - - /* include */ - case '+': - s++; - parser->cur_chunk.type = T_TYPE_INCLUDE; - break; - - /* translate */ - case ':': - s++; - parser->cur_chunk.type = T_TYPE_I18N; - break; - - /* translate raw */ - case '_': - s++; - parser->cur_chunk.type = T_TYPE_I18N_RAW; - break; - - /* expr */ - case '=': - s++; - parser->cur_chunk.type = T_TYPE_EXPR; - break; - - /* code */ - default: - parser->cur_chunk.type = T_TYPE_CODE; - break; - } - - parser->cur_chunk.line = parser->line; - parser->cur_chunk.s = s; - parser->cur_chunk.e = e; -} - -static const char * -template_format_chunk(struct template_parser *parser, size_t *sz) -{ - const char *s, *p; - const char *head, *tail; - struct template_chunk *c = &parser->prv_chunk; - struct template_buffer *buf; - - *sz = 0; - s = parser->gc = NULL; - - if (parser->strip_before && c->type == T_TYPE_TEXT) - { - while ((c->e > c->s) && isspace(*(c->e - 1))) - c->e--; - } - - /* empty chunk */ - if (c->s == c->e) - { - if (c->type == T_TYPE_EOF) - { - *sz = 0; - s = NULL; - } - else - { - *sz = 1; - s = " "; - } - } - - /* format chunk */ - else if ((buf = buf_init(c->e - c->s)) != NULL) - { - if ((head = gen_code[c->type][0]) != NULL) - buf_append(buf, head, strlen(head)); - - switch (c->type) - { - case T_TYPE_TEXT: - luastr_escape(buf, c->s, c->e - c->s, 0); - break; - - case T_TYPE_EXPR: - buf_append(buf, c->s, c->e - c->s); - for (p = c->s; p < c->e; p++) - parser->line += (*p == '\n'); - break; - - case T_TYPE_INCLUDE: - luastr_escape(buf, c->s, c->e - c->s, 0); - break; - - case T_TYPE_I18N: - luastr_translate(buf, c->s, c->e - c->s, 1); - break; - - case T_TYPE_I18N_RAW: - luastr_translate(buf, c->s, c->e - c->s, 0); - break; - - case T_TYPE_CODE: - buf_append(buf, c->s, c->e - c->s); - for (p = c->s; p < c->e; p++) - parser->line += (*p == '\n'); - break; - } - - if ((tail = gen_code[c->type][1]) != NULL) - buf_append(buf, tail, strlen(tail)); - - *sz = buf_length(buf); - s = parser->gc = buf_destroy(buf); - - if (!*sz) - { - *sz = 1; - s = " "; - } - } - - return s; -} - -const char *template_reader(lua_State *L, void *ud, size_t *sz) -{ - struct template_parser *parser = ud; - int rem = parser->size - (parser->off - parser->mmap); - char *tag; - - parser->prv_chunk = parser->cur_chunk; - - /* free previous string */ - if (parser->gc) - { - free(parser->gc); - parser->gc = NULL; - } - - /* before tag */ - if (!parser->in_expr) - { - if ((tag = strfind(parser->off, rem, "<%", 2)) != NULL) - { - template_text(parser, tag); - parser->off = tag + 2; - parser->in_expr = 1; - } - else - { - template_text(parser, parser->mmap + parser->size); - parser->off = parser->mmap + parser->size; - } - } - - /* inside tag */ - else - { - if ((tag = strfind(parser->off, rem, "%>", 2)) != NULL) - { - template_code(parser, tag); - parser->off = tag + 2; - parser->in_expr = 0; - } - else - { - /* unexpected EOF */ - template_code(parser, parser->mmap + parser->size); - - *sz = 1; - return "\033"; - } - } - - return template_format_chunk(parser, sz); -} - -int template_error(lua_State *L, struct template_parser *parser) -{ - const char *err = luaL_checkstring(L, -1); - const char *off = parser->prv_chunk.s; - const char *ptr; - char msg[1024]; - int line = 0; - int chunkline = 0; - - if ((ptr = strfind((char *)err, strlen(err), "]:", 2)) != NULL) - { - chunkline = atoi(ptr + 2) - parser->prv_chunk.line; - - while (*ptr) - { - if (*ptr++ == ' ') - { - err = ptr; - break; - } - } - } - - if (strfind((char *)err, strlen(err), "'char(27)'", 10) != NULL) - { - off = parser->mmap + parser->size; - err = "'%>' expected before end of file"; - chunkline = 0; - } - - for (ptr = parser->mmap; ptr < off; ptr++) - if (*ptr == '\n') - line++; - - snprintf(msg, sizeof(msg), "Syntax error in %s:%d: %s", - parser->file, line + chunkline, err ? err : "(unknown error)"); - - lua_pushnil(L); - lua_pushinteger(L, line + chunkline); - lua_pushstring(L, msg); - - return 3; -} |