From 0112143fdaae0a6264d9e02355e9dc0ca4f7741c Mon Sep 17 00:00:00 2001 From: wm4 Date: Tue, 17 Dec 2013 02:39:45 +0100 Subject: Split mpvcore/ into common/, misc/, bstr/ --- common/asxparser.c | 581 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 581 insertions(+) create mode 100644 common/asxparser.c (limited to 'common/asxparser.c') diff --git a/common/asxparser.c b/common/asxparser.c new file mode 100644 index 0000000000..5b1d5652a3 --- /dev/null +++ b/common/asxparser.c @@ -0,0 +1,581 @@ +/* + * This file is part of MPlayer. + * + * MPlayer is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * MPlayer is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include +#include +#include +#include +#include + +#include "playlist.h" +#include "playlist_parser.h" +#include "stream/stream.h" +#include "asxparser.h" +#include "common/msg.h" + + +typedef struct ASX_Parser_t ASX_Parser_t; + +typedef struct { + char* buffer; + int line; +} ASX_LineSave_t; + +struct ASX_Parser_t { + int line; // Curent line + ASX_LineSave_t *ret_stack; + int ret_stack_size; + char* last_body; + int deep; + struct playlist *pl; +}; + +ASX_Parser_t *asx_parser_new(struct playlist *pl); + +void +asx_parser_free(ASX_Parser_t* parser); + +/* + * Return -1 on error, 0 when nothing is found, 1 on sucess + */ +int +asx_get_element(ASX_Parser_t* parser,char** _buffer, + char** _element,char** _body,char*** _attribs); + +int +asx_parse_attribs(ASX_Parser_t* parser,char* buffer,char*** _attribs); + +/////// Attribs utils + +char* +asx_get_attrib(const char* attrib,char** attribs); + +#define asx_free_attribs(a) asx_list_free(&a,free) + +////// List utils + +typedef void (*ASX_FreeFunc)(void* arg); + +void +asx_list_free(void* list_ptr,ASX_FreeFunc free_func); + + +////// List utils + +void +asx_list_free(void* list_ptr,ASX_FreeFunc free_func) { + void** ptr = *(void***)list_ptr; + if(ptr == NULL) return; + if(free_func != NULL) { + for( ; *ptr != NULL ; ptr++) + free_func(*ptr); + } + free(*(void**)list_ptr); + *(void**)list_ptr = NULL; +} + +/////// Attribs utils + +char* +asx_get_attrib(const char* attrib,char** attribs) { + char** ptr; + + if(attrib == NULL || attribs == NULL) return NULL; + for(ptr = attribs; ptr[0] != NULL; ptr += 2){ + if(strcasecmp(ptr[0],attrib) == 0) + return strdup(ptr[1]); + } + return NULL; +} + +#define asx_warning_attrib_required(p,e,a) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : element %s don't have the required attribute %s",p->line,e,a) +#define asx_warning_body_parse_error(p,e) mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing %s body",p->line,e) + +ASX_Parser_t *asx_parser_new(struct playlist *pl) +{ + ASX_Parser_t* parser = calloc(1,sizeof(ASX_Parser_t)); + parser->pl = pl; + return parser; +} + +void +asx_parser_free(ASX_Parser_t* parser) { + if(!parser) return; + free(parser->ret_stack); + free(parser); + +} + +#define LETTER "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" +#define SPACE " \n\t\r" + +int +asx_parse_attribs(ASX_Parser_t* parser,char* buffer,char*** _attribs) { + char *ptr1, *ptr2, *ptr3; + int n_attrib = 0; + char **attribs = NULL; + char *attrib, *val; + + ptr1 = buffer; + while(1) { + for( ; strchr(SPACE,*ptr1) != NULL; ptr1++) { // Skip space + if(*ptr1 == '\0') break; + } + ptr3 = strchr(ptr1,'='); + if(ptr3 == NULL) break; + for(ptr2 = ptr3-1; strchr(SPACE,*ptr2) != NULL; ptr2--) { + if (ptr2 == ptr1) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : this should never append, back to attribute begin while skipping end space",parser->line); + break; + } + } + attrib = malloc(ptr2-ptr1+2); + strncpy(attrib,ptr1,ptr2-ptr1+1); + attrib[ptr2-ptr1+1] = '\0'; + + ptr1 = strchr(ptr3,'"'); + if(ptr1 == NULL || ptr1[1] == '\0') ptr1 = strchr(ptr3,'\''); + if(ptr1 == NULL || ptr1[1] == '\0') { + mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : can't find attribute %s value",parser->line,attrib); + free(attrib); + break; + } + ptr2 = strchr(ptr1+1,ptr1[0]); + if (ptr2 == NULL) { + mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : value of attribute %s isn't finished",parser->line,attrib); + free(attrib); + break; + } + ptr1++; + val = malloc(ptr2-ptr1+1); + strncpy(val,ptr1,ptr2-ptr1); + val[ptr2-ptr1] = '\0'; + n_attrib++; + + attribs = realloc(attribs, (2 * n_attrib + 1) * sizeof(char*)); + attribs[n_attrib*2-2] = attrib; + attribs[n_attrib*2-1] = val; + + ptr1 = ptr2+1; + } + + if(n_attrib > 0) + attribs[n_attrib*2] = NULL; + + *_attribs = attribs; + + return n_attrib; +} + +/* + * Return -1 on error, 0 when nothing is found, 1 on sucess + */ +int +asx_get_element(ASX_Parser_t* parser,char** _buffer, + char** _element,char** _body,char*** _attribs) { + char *ptr1,*ptr2, *ptr3, *ptr4; + char *attribs = NULL; + char *element = NULL, *body = NULL, *ret = NULL, *buffer; + int n_attrib = 0; + int body_line = 0,attrib_line,ret_line,in = 0; + int quotes = 0; + + if(_buffer == NULL || _element == NULL || _body == NULL || _attribs == NULL) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : asx_get_element called with invalid value",parser->line); + return -1; + } + + *_body = *_element = NULL; + *_attribs = NULL; + buffer = *_buffer; + + if(buffer == NULL) return 0; + + if(parser->ret_stack && /*parser->last_body && */buffer != parser->last_body) { + ASX_LineSave_t* ls = parser->ret_stack; + int i; + for(i = 0 ; i < parser->ret_stack_size ; i++) { + if(buffer == ls[i].buffer) { + parser->line = ls[i].line; + break; + } + + } + if( i < parser->ret_stack_size) { + i++; + if( i < parser->ret_stack_size) + memmove(parser->ret_stack,parser->ret_stack+i, (parser->ret_stack_size - i)*sizeof(ASX_LineSave_t)); + parser->ret_stack_size -= i; + if(parser->ret_stack_size > 0) + parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t)); + else { + free(parser->ret_stack); + parser->ret_stack = NULL; + } + } + } + + ptr1 = buffer; + while(1) { + for( ; ptr1[0] != '<' ; ptr1++) { + if(ptr1[0] == '\0') { + ptr1 = NULL; + break; + } + if(ptr1[0] == '\n') parser->line++; + } + //ptr1 = strchr(ptr1,'<'); + if(!ptr1 || ptr1[1] == '\0') return 0; // Nothing found + + if(strncmp(ptr1,"",3) != 0 ; ptr1++) { + if(ptr1[0] == '\0') { + ptr1 = NULL; + break; + } + if(ptr1[0] == '\n') parser->line++; + } + //ptr1 = strstr(ptr1,"-->"); + if(!ptr1) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : unfinished comment",parser->line); + return -1; + } + } else { + break; + } + } + + // Is this space skip very useful ?? + for(ptr1++; strchr(SPACE,ptr1[0]) != NULL; ptr1++) { // Skip space + if(ptr1[0] == '\0') { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line); + return -1; + } + if(ptr1[0] == '\n') parser->line++; + } + + for(ptr2 = ptr1; strchr(LETTER,*ptr2) != NULL;ptr2++) { // Go to end of name + if(*ptr2 == '\0'){ + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line); + return -1; + } + if(ptr2[0] == '\n') parser->line++; + } + + element = malloc(ptr2-ptr1+1); + strncpy(element,ptr1,ptr2-ptr1); + element[ptr2-ptr1] = '\0'; + + for( ; strchr(SPACE,*ptr2) != NULL; ptr2++) { // Skip space + if(ptr2[0] == '\0') { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line); + free(element); + return -1; + } + if(ptr2[0] == '\n') parser->line++; + } + attrib_line = parser->line; + + + + for(ptr3 = ptr2; ptr3[0] != '\0'; ptr3++) { // Go to element end + if(ptr3[0] == '"') quotes ^= 1; + if(!quotes && (ptr3[0] == '>' || strncmp(ptr3,"/>",2) == 0)) + break; + if(ptr3[0] == '\n') parser->line++; + } + if(ptr3[0] == '\0' || ptr3[1] == '\0') { // End of file + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing element start",parser->line); + free(element); + return -1; + } + + // Save attribs string + if(ptr3-ptr2 > 0) { + attribs = malloc(ptr3-ptr2+1); + strncpy(attribs,ptr2,ptr3-ptr2); + attribs[ptr3-ptr2] = '\0'; + } + //bs_line = parser->line; + if(ptr3[0] != '/') { // Not Self closed element + ptr3++; + for( ; strchr(SPACE,*ptr3) != NULL; ptr3++) { // Skip space on body begin + if(*ptr3 == '\0') { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element); + free(element); + free(attribs); + return -1; + } + if(ptr3[0] == '\n') parser->line++; + } + ptr4 = ptr3; + body_line = parser->line; + while(1) { // Find closing element + for( ; ptr4[0] != '<' ; ptr4++) { + if(ptr4[0] == '\0') { + ptr4 = NULL; + break; + } + if(ptr4[0] == '\n') parser->line++; + } + if(ptr4 && strncmp(ptr4,"",3) != 0 ; ptr4++) { + if(ptr4[0] == '\0') { + ptr4 = NULL; + break; + } + if(ptr1[0] == '\n') parser->line++; + } + continue; + } + if(ptr4 == NULL || ptr4[1] == '\0') { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : EOB reached while parsing %s element body",parser->line,element); + free(element); + free(attribs); + return -1; + } + if(ptr4[1] != '/' && strncasecmp(element,ptr4+1,strlen(element)) == 0) { + in++; + ptr4+=2; + continue; + } else if(strncasecmp(element,ptr4+2,strlen(element)) == 0) { // Extract body + if(in > 0) { + in--; + ptr4 += 2+strlen(element); + continue; + } + ret = ptr4+strlen(element)+3; + if(ptr4 != ptr3) { + ptr4--; + for( ; ptr4 != ptr3 && strchr(SPACE,*ptr4) != NULL; ptr4--) ;// Skip space on body end + // if(ptr4[0] == '\0') parser->line--; + //} + ptr4++; + body = malloc(ptr4-ptr3+1); + strncpy(body,ptr3,ptr4-ptr3); + body[ptr4-ptr3] = '\0'; + } + break; + } else { + ptr4 += 2; + } + } + } else { + ret = ptr3 + 2; // 2 is for /> + } + + for( ; ret[0] != '\0' && strchr(SPACE,ret[0]) != NULL; ret++) { // Skip space + if(ret[0] == '\n') parser->line++; + } + + ret_line = parser->line; + + if(attribs) { + parser->line = attrib_line; + n_attrib = asx_parse_attribs(parser,attribs,_attribs); + free(attribs); + if(n_attrib < 0) { + mp_msg(MSGT_PLAYTREE,MSGL_WARN,"At line %d : error while parsing element %s attributes",parser->line,element); + free(element); + free(body); + return -1; + } + } else + *_attribs = NULL; + + *_element = element; + *_body = body; + + parser->last_body = body; + parser->ret_stack_size++; + parser->ret_stack = realloc(parser->ret_stack,parser->ret_stack_size*sizeof(ASX_LineSave_t)); + if(parser->ret_stack_size > 1) + memmove(parser->ret_stack+1,parser->ret_stack,(parser->ret_stack_size-1)*sizeof(ASX_LineSave_t)); + parser->ret_stack[0].buffer = ret; + parser->ret_stack[0].line = ret_line; + parser->line = body ? body_line : ret_line; + + *_buffer = ret; + return 1; + +} + +static void +asx_parse_ref(ASX_Parser_t* parser, char** attribs) { + char *href; + + href = asx_get_attrib("HREF",attribs); + if(href == NULL) { + asx_warning_attrib_required(parser,"REF" ,"HREF" ); + return; + } +#if 0 + // replace http my mmshttp to avoid infinite loops + // disabled since some playlists for e.g. WinAMP use asx as well + // "-user-agent NSPlayer/4.1.0.3856" is a possible workaround + if (strncmp(href, "http://", 7) == 0) { + char *newref = malloc(3 + strlen(href) + 1); + strcpy(newref, "mms"); + strcpy(newref + 3, href); + free(href); + href = newref; + } +#endif + + playlist_add_file(parser->pl, href); + + mp_msg(MSGT_PLAYTREE,MSGL_V,"Adding file %s to element entry\n",href); + + free(href); + +} + +static void asx_parse_entryref(ASX_Parser_t* parser,char* buffer,char** _attribs) { + char *href; + + if(parser->deep > 0) + return; + + href = asx_get_attrib("HREF",_attribs); + if(href == NULL) { + asx_warning_attrib_required(parser,"ENTRYREF" ,"HREF" ); + return; + } + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"Recursive playlist %s\n", href); + playlist_add_file(parser->pl, href); + free(href); + //mp_msg(MSGT_PLAYTREE,MSGL_INFO,"Need to implement entryref\n"); +} + +static void asx_parse_entry(ASX_Parser_t* parser,char* buffer,char** _attribs) { + char *element,*body,**attribs; + int r; + + while(buffer && buffer[0] != '\0') { + r = asx_get_element(parser,&buffer,&element,&body,&attribs); + if(r < 0) { + asx_warning_body_parse_error(parser,"ENTRY"); + return; + } else if (r == 0) { // No more element + break; + } + if(strcasecmp(element,"REF") == 0) { + asx_parse_ref(parser,attribs); + mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Adding element %s to entry\n",element); + } else + mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element); + free(body); + asx_free_attribs(attribs); + } + +} + + +static void asx_parse_repeat(ASX_Parser_t* parser,char* buffer,char** _attribs) { + char *element,*body,**attribs; + int r; + + asx_get_attrib("COUNT",_attribs); + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"Ignoring repeated playlist entries\n"); + + while(buffer && buffer[0] != '\0') { + r = asx_get_element(parser,&buffer,&element,&body,&attribs); + if(r < 0) { + asx_warning_body_parse_error(parser,"REPEAT"); + return; + } else if (r == 0) { // No more element + break; + } + if(strcasecmp(element,"ENTRY") == 0) { + asx_parse_entry(parser,body,attribs); + } else if(strcasecmp(element,"ENTRYREF") == 0) { + asx_parse_entryref(parser,body,attribs); + } else if(strcasecmp(element,"REPEAT") == 0) { + asx_parse_repeat(parser,body,attribs); + } else + mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element); + free(body); + asx_free_attribs(attribs); + } + +} + + +bool asx_parse(char* buffer, struct playlist *pl) +{ + char *element,*asx_body,**asx_attribs,*body = NULL, **attribs; + int r; + ASX_Parser_t* parser = asx_parser_new(pl); + + parser->line = 1; + parser->deep = 0; + + r = asx_get_element(parser,&buffer,&element,&asx_body,&asx_attribs); + if(r < 0) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"At line %d : Syntax error ???",parser->line); + asx_parser_free(parser); + return false; + } else if(r == 0) { // No contents + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"empty asx element"); + asx_parser_free(parser); + return false; + } + + if(strcasecmp(element,"ASX") != 0) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"first element isn't ASX, it's %s\n",element); + asx_free_attribs(asx_attribs); + asx_parser_free(parser); + return false; + } + + if(!asx_body) { + mp_msg(MSGT_PLAYTREE,MSGL_ERR,"ASX element is empty"); + asx_free_attribs(asx_attribs); + asx_parser_free(parser); + return false; + } + + buffer = asx_body; + while(buffer && buffer[0] != '\0') { + r = asx_get_element(parser,&buffer,&element,&body,&attribs); + if(r < 0) { + asx_warning_body_parse_error(parser,"ASX"); + asx_parser_free(parser); + return false; + } else if (r == 0) { // No more element + break; + } + if(strcasecmp(element,"ENTRY") == 0) { + asx_parse_entry(parser,body,attribs); + } else if(strcasecmp(element,"ENTRYREF") == 0) { + asx_parse_entryref(parser,body,attribs); + } else if(strcasecmp(element,"REPEAT") == 0) { + asx_parse_repeat(parser,body,attribs); + } else + mp_msg(MSGT_PLAYTREE,MSGL_DBG2,"Ignoring element %s\n",element); + free(body); + asx_free_attribs(attribs); + } + + free(asx_body); + asx_free_attribs(asx_attribs); + asx_parser_free(parser); + return true; +} -- cgit v1.2.3