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Diffstat (limited to 'libical/src/libical/icalparser.c')
| -rw-r--r-- | libical/src/libical/icalparser.c | 990 |
1 files changed, 0 insertions, 990 deletions
diff --git a/libical/src/libical/icalparser.c b/libical/src/libical/icalparser.c deleted file mode 100644 index 3be754036a..0000000000 --- a/libical/src/libical/icalparser.c +++ /dev/null @@ -1,990 +0,0 @@ -/* -*- Mode: C -*- - ====================================================================== - FILE: icalparser.c - CREATOR: eric 04 August 1999 - - $Id$ - $Locker$ - - The contents of this file are subject to the Mozilla Public License - Version 1.0 (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.mozilla.org/MPL/ - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and - limitations under the License. - - The Initial Developer of the Original Code is Eric Busboom - - (C) COPYRIGHT 1999 The Software Studio. - http://www.softwarestudio.org - - ======================================================================*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - - -#include "ical.h" -#include "pvl.h" -#include "icalparser.h" -#include "icalmemory.h" -#include <string.h> /* For strncpy & size_t */ -#include <stdio.h> /* For FILE and fgets and sprintf */ -#include <stdlib.h> /* for free */ - - -extern icalvalue* icalparser_yy_value; -void set_parser_value_state(icalvalue_kind kind); -int ical_yy_parse(void); - -char* icalparser_get_next_char(char c, char *str); -char* icalparser_get_next_parameter(char* line,char** end); -char* icalparser_get_next_value(char* line, char **end, icalvalue_kind kind); -char* icalparser_get_prop_name(char* line, char** end); -char* icalparser_get_param_name(char* line, char **end); - -#define TMP_BUF_SIZE 80 - -struct icalparser_impl -{ - int buffer_full; - size_t tmp_buf_size; - char temp[TMP_BUF_SIZE]; - icalcomponent *root_component; - icalcomponent *tail; - int version; - int level; - int lineno; - icalparser_state state; - pvl_list components; - - void *line_gen_data; - -}; - - -icalparser* icalparser_new() -{ - struct icalparser_impl* impl = 0; - - if ( ( impl = (struct icalparser_impl*) - malloc(sizeof(struct icalparser_impl))) == 0) { - icalerror_set_errno(ICAL_NEWFAILED_ERROR); - return 0; - } - - impl->root_component = 0; - impl->components = pvl_newlist(); - impl->level = 0; - impl->state = ICALPARSER_SUCCESS; - - impl->tmp_buf_size = TMP_BUF_SIZE; - impl->buffer_full = 0; - impl->lineno = 0; - - memset(impl->temp,0, TMP_BUF_SIZE); - - return (icalparser*)impl; -} - -void icalparser_free(icalparser* parser) -{ - struct icalparser_impl* impl = (struct icalparser_impl*)parser; - icalcomponent *c; - - if (impl->root_component != 0){ - icalcomponent_free(impl->root_component); - } - - while( (c=pvl_pop(impl->components)) != 0){ - icalcomponent_free(c); - } - - pvl_free(impl->components); -} - -void icalparser_set_gen_data(icalparser* parser, void* data) -{ - struct icalparser_impl* impl = (struct icalparser_impl*)parser; - - impl->line_gen_data = data; -} - - -icalvalue* icalvalue_new_from_string_with_error(icalvalue_kind kind, - char* str, - icalproperty **error); - - - -char* icalparser_get_next_char(char c, char *str) -{ - int quote_mode = 0; - char* p; - - - for(p=str; *p!=0; p++){ - - if ( quote_mode == 0 && *p=='"' && *(p-1) != '\\' ){ - quote_mode =1; - continue; - } - - if ( quote_mode == 1 && *p=='"' && *(p-1) != '\\' ){ - quote_mode =0; - continue; - } - - if (quote_mode == 0 && *p== c && *(p-1) != '\\' ){ - return p; - } - - } - - return 0; -} - -/* make a new tmp buffer out of a substring */ -char* make_segment(char* start, char* end) -{ - char *buf; - size_t size = (size_t)end - (size_t)start; - - buf = icalmemory_tmp_buffer(size+1); - - - strncpy(buf,start,size); - *(buf+size) = 0; - - return buf; - -} - -char* input_buffer; -char* input_buffer_p; -#define min(a,b) ((a) < (b) ? (a) : (b)) - -int icalparser_flex_input(char* buf, int max_size) -{ - int n = min(max_size,strlen(input_buffer_p)); - - if (n > 0){ - memcpy(buf, input_buffer_p, n); - input_buffer_p += n; - return n; - } else { - return 0; - } -} - -void icalparser_clear_flex_input() -{ - input_buffer_p = input_buffer+strlen(input_buffer); -} - -/* Cal the flex parser to parse a complex value */ - -icalvalue* icalparser_parse_value(icalvalue_kind kind, - char* str, icalproperty** error) -{ - int r; - input_buffer_p = input_buffer = str; - - set_parser_value_state(kind); - icalparser_yy_value = 0; - - r = ical_yy_parse(); - - /* Error. Parse failed */ - if( icalparser_yy_value == 0 || r != 0){ - - if(icalparser_yy_value !=0){ - icalvalue_free(icalparser_yy_value); - icalparser_yy_value = 0; - } - - return 0; - } - - if (error != 0){ - *error = 0; - } - - return icalparser_yy_value; -} - -char* icalparser_get_prop_name(char* line, char** end) -{ - char* p; - char* v; - char *str; - - p = icalparser_get_next_char(';',line); - v = icalparser_get_next_char(':',line); - if (p== 0 && v == 0) { - return 0; - } - - /* There is no ';' or, it is after the ';' that marks the beginning of - the value */ - if (v!=0 && ( p == 0 || p > v)){ - str = make_segment(line,v); - *end = v+1; - } else { - str = make_segment(line,p); - *end = p+1; - } - - return str; -} - -char* icalparser_get_param_name(char* line, char **end) -{ - - char* next; - char *str; - - next = icalparser_get_next_char('=',line); - - if (next == 0) { - return 0; - } - - str = make_segment(line,next); - *end = next+1; - return str; - -} - -char* icalparser_get_next_paramvalue(char* line, char **end) -{ - - char* next; - char *str; - - next = icalparser_get_next_char(',',line); - - if (next == 0){ - next = (char*)(size_t)line+(size_t)strlen(line);\ - } - - if (next == line){ - return 0; - } else { - str = make_segment(line,next); - *end = next+1; - return str; - } - -} - -/* A property may have multiple values, if the values are seperated by - commas in the content line. This routine will look for the next - comma after line and will set the next place to start searching in - end. */ - -char* icalparser_get_next_value(char* line, char **end, icalvalue_kind kind) -{ - - char* next; - char *p; - char *str; - size_t length = strlen(line); - - p = line; - while(1){ - - next = icalparser_get_next_char(',',p); - - /* Unforunately, RFC2445 says that for the RECUR value, COMMA - can both seperate digits in a list, and it can seperate - multiple recurrence specifications. This is not a friendly - part of the spec. This weirdness tries to - distinguish the two uses. it is probably a HACK*/ - - if( kind == ICAL_RECUR_VALUE ) { - if ( next != 0 && - (*end+length) > next+5 && - strncmp(next,"FREQ",4) == 0 - ) { - /* The COMMA was followed by 'FREQ', is it a real seperator*/ - /* Fall through */ - printf("%s\n",next); - } else if (next != 0){ - /* Not real, get the next COMMA */ - p = next+1; - next = 0; - continue; - } - } - - /* If the comma is preceeded by a '\', then it is a literal and - not a value seperator*/ - - if ( (next!=0 && *(next-1) == '\\') || - (next!=0 && *(next-3) == '\\') - ) - /*second clause for '/' is on prev line. HACK may be out of bounds */ - { - p = next+1; - } else { - break; - } - - } - - if (next == 0){ - next = (char*)(size_t)line+length; - *end = next; - } else { - *end = next+1; - } - - if (next == line){ - return 0; - } - - - str = make_segment(line,next); - return str; - -} - -char* icalparser_get_next_parameter(char* line,char** end) -{ - char *next; - char *v; - char *str; - - v = icalparser_get_next_char(':',line); - next = icalparser_get_next_char(';', line); - - /* There is no ';' or, it is after the ':' that marks the beginning of - the value */ - - if (next == 0 || next > v) { - next = icalparser_get_next_char(':', line); - } - - if (next != 0) { - str = make_segment(line,next); - *end = next+1; - return str; - } else { - *end = line; - return 0; - } -} - -/* Get a single property line, from the property name through the - final new line, and include any continuation lines */ - -char* icalparser_get_line(icalparser *parser, - char* (*line_gen_func)(char *s, size_t size, void *d)) -{ - char *line; - char *line_p; - struct icalparser_impl* impl = (struct icalparser_impl*)parser; - size_t buf_size = impl->tmp_buf_size; - - - line_p = line = icalmemory_new_buffer(buf_size); - line[0] = '\0'; - - while(1) { - - /* The buffer is not clear, so transfer the data in it to the - output. This may be left over from a previous call */ - if (impl->temp[0] != '\0' ) { - - /* If the last position in the temp buffer is occupied, - mark the buffer as full. The means we will do another - read later, because the line is not finished */ - if (impl->temp[impl->tmp_buf_size-1] == 0){ - impl->buffer_full = 1; - } else { - impl->buffer_full = 0; - } - - /* Copy the temp to the output and clear the temp buffer. */ - icalmemory_append_string(&line,&line_p,&buf_size,impl->temp); - impl->temp[0] = '\0' ; - } - - impl->temp[impl->tmp_buf_size-1] = 1; /* Mark end of buffer */ - - if ((*line_gen_func)(impl->temp,impl->tmp_buf_size,impl->line_gen_data) - ==0){/* Get more data */ - - /* If the first position is clear, it means we didn't get - any more data from the last call to line_ge_func*/ - if (impl->temp[0] == '\0'){ - - if(line[0] != '\0'){ - /* There is data in the output, so fall trhough and process it*/ - break; - } else { - /* No data in output; return and signal that there - is no more input*/ - free(line); - return 0; - } - } - } - - - /* If the output line ends in a '\n' and the temp buffer - begins with a ' ', then the buffer holds a continuation - line, so keep reading. */ - - if ( line_p > line+1 && *(line_p-1) == '\n' && impl->temp[0] == ' ') { - - /* back up the pointer to erase the continuation characters */ - line_p--; - - if ( *(line_p-1) == '\r'){ - line_p--; - } - - /* shift the temp buffer down to eliminate the leading space*/ - memmove(&(impl->temp[0]),&(impl->temp[1]),impl->tmp_buf_size); - - impl->temp[impl->tmp_buf_size-1] = impl->temp[impl->tmp_buf_size-2]; - - } else if ( impl->buffer_full == 1 ) { - - /* The buffer was filled on the last read, so read again */ - - } else { - - /* Looks like the end of this content line, so break */ - break; - } - - - } - - /* Erase the final newline and/or carriage return*/ - if ( line_p > line+1 && *(line_p-1) == '\n') { - *(line_p-1) = '\0'; - if ( *(line_p-2) == '\r'){ - *(line_p-2) = '\0'; - } - - } else { - *(line_p) = '\0'; - } - - return line; - -} - -void insert_error(icalcomponent* comp, char* text, - char* message, icalparameter_xlicerrortype type) -{ - char temp[1024]; - - if (text == 0){ - snprintf(temp,1024,"%s:",message); - } else { - snprintf(temp,1024,"%s: \'%s\'",message,text); - } - - icalcomponent_add_property - (comp, - icalproperty_vanew_xlicerror( - temp, - icalparameter_new_xlicerrortype(type), - 0)); -} - -icalcomponent* icalparser_parse(icalparser *parser, - char* (*line_gen_func)(char *s, size_t size, - void* d)) -{ - - char* line; - icalcomponent *c=0; - icalcomponent *root_component=0; - - icalerror_check_arg_rz((parser !=0),"parser"); - - do{ - line = icalparser_get_line(parser, line_gen_func); - - if ((c = icalparser_add_line(parser,line)) != 0){ - if (root_component == 0){ - /* Just one component */ - icalparser_claim(parser); - root_component = c; - } else if(icalcomponent_isa(root_component) - != ICAL_XROOT_COMPONENT) { - /*Got a second component, so move the two components under - an XROOT container */ - icalcomponent *tempc; - tempc = icalcomponent_new(ICAL_XROOT_COMPONENT); - icalcomponent_add_component(tempc, root_component); - icalparser_claim(parser); - icalcomponent_add_component(tempc, c); - root_component = tempc; - } else { - /* Already have an XROOT container, so add the component - to it*/ - icalcomponent_add_component(root_component, c); - icalparser_claim(parser); - } - } - } while ( line != 0); - - return root_component; - -} - -icalcomponent* icalparser_add_line(icalparser* parser, - char* line) -{ - char *p; - char *str; - char *end; - int vcount = 0; - icalproperty *prop; - icalvalue *value; - icalvalue_kind value_kind = ICAL_NO_VALUE; - - - struct icalparser_impl *impl = (struct icalparser_impl*)parser; - icalerror_check_arg_rz((parser != 0),"parser"); - - - if (line == 0) - { - impl->state = ICALPARSER_ERROR; - return 0; - } - - /* Begin by getting the property name at the start of the line. The - property name may end up being "BEGIN" or "END" in which case it - is not really a property, but the market for the start or end of - a component */ - - end = 0; - str = icalparser_get_prop_name(line, &end); - - if (str == 0){ - /* Could not get a property name */ - icalcomponent *tail = pvl_data(pvl_tail(impl->components)); - - if (tail){ - insert_error(tail,line, - "Got a data line, but could not find a property name or component begin tag", - ICAL_XLICERRORTYPE_COMPONENTPARSEERROR); - } - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - } - - /********************************************************************** - * Handle begin and end of components - **********************************************************************/ - - - /* If the property name is BEGIN or END, we are actually - starting or ending a new component */ - - if(strcmp(str,"BEGIN") == 0){ - icalcomponent *c; - - impl->level++; - str = icalparser_get_next_value(end,&end, value_kind); - - c = icalcomponent_new_from_string(str); - - if (c == 0){ - c = icalcomponent_new(ICAL_XLICINVALID_COMPONENT); - insert_error(c,str,"Parse error in component name", - ICAL_XLICERRORTYPE_COMPONENTPARSEERROR); - } - - pvl_push(impl->components,c); - - impl->state = ICALPARSER_BEGIN_COMP; - return 0; - - } else if (strcmp(str,"END") == 0 ) { - icalcomponent* tail; - - impl->level--; - str = icalparser_get_next_value(end,&end, value_kind); - - impl->root_component = pvl_pop(impl->components); - - tail = pvl_data(pvl_tail(impl->components)); - - if(tail != 0){ - icalcomponent_add_component(tail,impl->root_component); - } - - tail = 0; - - /* Return the component if we are back to the 0th level */ - if (impl->level == 0){ - impl->state = ICALPARSER_SUCCESS; - return impl->root_component; - } else { - impl->state = ICALPARSER_END_COMP; - return 0; - } - } - - - /* There is no point in continuing if we have not seen a - component yet */ - - if(pvl_data(pvl_tail(impl->components)) == 0){ - impl->state = ICALPARSER_ERROR; - return 0; - } - - - /********************************************************************** - * Handle property names - **********************************************************************/ - /* At this point, the property name really is a property name, - (Not a component name) so make a new property and add it to - the component */ - - prop = icalproperty_new_from_string(str); - - if (prop != 0){ - icalcomponent *tail = pvl_data(pvl_tail(impl->components)); - - icalcomponent_add_property(tail, prop); - - /* Set the value kind for the default for this type of - property. This may be re-set by a VALUE parameter */ - value_kind = - icalenum_property_kind_to_value_kind( - icalproperty_isa(prop)); - - } else { - icalcomponent* tail = pvl_data(pvl_tail(impl->components)); - - insert_error(tail,str,"Parse error in property name", - ICAL_XLICERRORTYPE_PROPERTYPARSEERROR); - - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - } - - /********************************************************************** - * Handle parameter values - **********************************************************************/ - - /* Now, add any parameters to the last property */ - - p = 0; - while(1) { - - if (*(end-1) == ':'){ - /* if the last seperator was a ":" and the value is a - URL, icalparser_get_next_parameter will find the - ':' in the URL, so better break now. */ - break; - } - - str = icalparser_get_next_parameter(end,&end); - - if (str != 0){ - char* name; - char* pvalue; - - icalparameter *param = 0; - icalparameter_kind kind; - icalcomponent *tail = pvl_data(pvl_tail(impl->components)); - - name = icalparser_get_param_name(str,&pvalue); - - if (name == 0){ - /* 'tail' defined above */ - insert_error(tail, str, "Can't parse parameter name", - ICAL_XLICERRORTYPE_PARAMETERNAMEPARSEERROR); - tail = 0; - break; - } - - kind = icalenum_string_to_parameter_kind(name); - - if (kind != ICAL_NO_PARAMETER){ - param = icalparameter_new_from_string(kind,pvalue); - } else { - /* Error. Failed to parse the parameter*/ - /* 'tail' defined above */ - insert_error(tail, str, "Can't parse parameter name", - ICAL_XLICERRORTYPE_PARAMETERNAMEPARSEERROR); - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - } - - if (param == 0){ - /* 'tail' defined above */ - insert_error(tail,str,"Can't parse parameter value", - ICAL_XLICERRORTYPE_PARAMETERVALUEPARSEERROR); - - tail = 0; - impl->state = ICALPARSER_ERROR; - continue; - } - - /* If it is a VALUE parameter, set the kind of value*/ - if (icalparameter_isa(param)==ICAL_VALUE_PARAMETER){ - - value_kind = (icalvalue_kind) - icalparameter_get_value(param); - - if (value_kind == ICAL_NO_VALUE){ - - /* Ooops, could not parse the value of the - parameter ( it was not one of the defined - values ), so reset the value_kind */ - - insert_error( - tail, str, - "Got a VALUE parameter with an unknown type", - ICAL_XLICERRORTYPE_PARAMETERVALUEPARSEERROR); - icalparameter_free(param); - - value_kind = - icalenum_property_kind_to_value_kind( - icalproperty_isa(prop)); - - icalparameter_free(param); - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - } - } - - /* Everything is OK, so add the parameter */ - icalproperty_add_parameter(prop,param); - tail = 0; - - } else { /* if ( str != 0) */ - /* If we did not get a param string, go on to looking - for a value */ - break; - } /* if ( str != 0) */ - - } /* while(1) */ - - /********************************************************************** - * Handle values - **********************************************************************/ - - /* Look for values. If there are ',' characters in the values, - then there are multiple values, so clone the current - parameter and add one part of the value to each clone */ - - vcount=0; - while(1) { - str = icalparser_get_next_value(end,&end, value_kind); - - if (str != 0){ - - if (vcount > 0){ - /* Actually, only clone after the second value */ - icalproperty* clone = icalproperty_new_clone(prop); - icalcomponent* tail = pvl_data(pvl_tail(impl->components)); - - icalcomponent_add_property(tail, clone); - prop = clone; - tail = 0; - } - - value = icalvalue_new_from_string(value_kind, str); - - /* Don't add properties without value */ - if (value == 0){ - char temp[200]; /* HACK */ - - icalproperty_kind prop_kind = icalproperty_isa(prop); - icalcomponent* tail = pvl_data(pvl_tail(impl->components)); - - sprintf(temp,"Can't parse as %s value in %s property. Removing entire property", - icalenum_value_kind_to_string(value_kind), - icalenum_property_kind_to_string(prop_kind)); - - insert_error(tail, str, temp, - ICAL_XLICERRORTYPE_VALUEPARSEERROR); - - /* Remove the troublesome property */ - icalcomponent_remove_property(tail,prop); - icalproperty_free(prop); - prop = 0; - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - - } else { - vcount++; - icalproperty_set_value(prop, value); - } - - - } else { - if (vcount == 0){ - char temp[200]; /* HACK */ - - icalproperty_kind prop_kind = icalproperty_isa(prop); - icalcomponent *tail = pvl_data(pvl_tail(impl->components)); - - sprintf(temp,"No value for %s property. Removing entire property", - icalenum_property_kind_to_string(prop_kind)); - - insert_error(tail, str, temp, - ICAL_XLICERRORTYPE_VALUEPARSEERROR); - - /* Remove the troublesome property */ - icalcomponent_remove_property(tail,prop); - icalproperty_free(prop); - prop = 0; - tail = 0; - impl->state = ICALPARSER_ERROR; - return 0; - } else { - - break; - } - } - } - - /**************************************************************** - * End of component parsing. - *****************************************************************/ - - if (pvl_data(pvl_tail(impl->components)) == 0 && - impl->level == 0){ - impl->state = ICALPARSER_SUCCESS; - return impl->root_component; - } else { - impl->state = ICALPARSER_IN_PROGRESS; - return 0; - } - -} - -icalparser_state icalparser_get_state(icalparser* parser) -{ - struct icalparser_impl* impl = (struct icalparser_impl*) parser; - return impl->state; - -} - -icalcomponent* icalparser_claim(icalparser* parser) -{ - struct icalparser_impl* impl = (struct icalparser_impl*) parser; - icalcomponent *c = impl->root_component; - - impl->root_component = 0; - - return c; - -} - - -icalcomponent* icalparser_clean(icalparser* parser) -{ - struct icalparser_impl* impl = (struct icalparser_impl*) parser; - icalcomponent *tail = pvl_data(pvl_tail(impl->components)); - - icalerror_check_arg_rz((parser != 0 ),"parser"); - - /* We won't get a clean exit if some components did not have an - "END" tag. Clear off any component that may be left in the list */ - - - while((tail=pvl_data(pvl_tail(impl->components))) != 0){ - - insert_error(tail," ", - "Missing END tag for this component. Closing component at end of input.", - ICAL_XLICERRORTYPE_COMPONENTPARSEERROR); - - - impl->root_component = pvl_pop(impl->components); - tail=pvl_data(pvl_tail(impl->components)); - - if(tail != 0){ - icalcomponent_add_component(tail,impl->root_component); - } - } - - return impl->root_component; - -} - -struct slg_data { - char* pos; - char* str; -}; - -char* string_line_generator(char *out, size_t buf_size, void *d) -{ - char *n; - size_t size; - struct slg_data* data = (struct slg_data*)d; - - if(data->pos==0){ - data->pos=data->str; - } - - /* If the pointer is at the end of the string, we are done */ - if (*(data->pos)==0){ - return 0; - } - - n = strchr(data->pos,'\n'); - - if (n == 0){ - size = strlen(data->pos); - } else { - n++; /* include newline in output */ - size = (n-data->pos); - } - - if (size > buf_size-1){ - size = buf_size-1; - } - - - strncpy(out,data->pos,size); - - *(out+size) = '\0'; - - data->pos += size; - - return out; -} - -icalcomponent* icalparser_parse_string(char* str) -{ - icalcomponent *c; - struct slg_data d; - icalparser *p; - - d.pos = 0; - d.str = str; - - p = icalparser_new(); - icalparser_set_gen_data(p,&d); - c = icalparser_parse(p,string_line_generator); - icalparser_free(p); - - return c; - -} |