--- /dev/null
+/*
+
+parser.c: Generate helper declarations and functions to trace events
+ from an event description file.
+
+Copyright (C) 2002, Xianxiu Yang
+Copyright (C) 2002, Michel Dagenais
+This program 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; version 2 of the License.
+
+This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+/* This program reads the ".xml" event definitions input files
+ and constructs structure for each event.
+
+ The program uses a very simple tokenizer, called from a hand written
+ recursive descent parser to fill a data structure describing the events.
+ The result is a sequence of events definitions which refer to type
+ definitions.
+
+ A table of named types is maintained to allow refering to types by name
+ when the same type is used at several places. Finally a sequence of
+ all types is maintained to facilitate the freeing of all type
+ information when the processing of an ".xml" file is finished. */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <linux/errno.h>
+#include <assert.h>
+
+
+#include "parser.h"
+
+
+/* helper function */
+void strupper(char *string)
+{
+ char *ptr = string;
+
+ while(*ptr != '\0') {
+ *ptr = toupper(*ptr);
+ ptr++;
+ }
+}
+
+
+int getSizeindex(int value)
+{
+ switch(value) {
+ case 1:
+ return 0;
+ case 2:
+ return 1;
+ case 4:
+ return 2;
+ case 8:
+ return 3;
+ default:
+ printf("Error : unknown value size %d\n", value);
+ exit(-1);
+ }
+}
+
+/*****************************************************************************
+ *Function name
+ * getSize : translate from string to integer
+ *Input params
+ * in : input file handle
+ *Return values
+ * size
+ *****************************************************************************/
+
+int getSize(parse_file *in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type == NUMBER) {
+ if(strcmp(token,"1") == 0) return 0;
+ else if(strcmp(token,"2") == 0) return 1;
+ else if(strcmp(token,"4") == 0) return 2;
+ else if(strcmp(token,"8") == 0) return 3;
+ }
+ else if(in->type == NAME) {
+ if(strcmp(token,"short") == 0) return 4;
+ else if(strcmp(token,"medium") == 0) return 5;
+ else if(strcmp(token,"long") == 0) return 6;
+ }
+ in->error(in,"incorrect size specification");
+ return -1;
+}
+
+/*****************************************************************************
+ *Function name
+ * error_callback : print out error info
+ *Input params
+ * in : input file handle
+ * msg : message to be printed
+ ****************************************************************************/
+
+void error_callback(parse_file *in, char *msg)
+{
+ if(in)
+ printf("Error in file %s, line %d: %s\n", in->name, in->lineno, msg);
+ else
+ printf("%s\n",msg);
+ assert(0);
+ exit(1);
+}
+
+/*****************************************************************************
+ *Function name
+ * memAlloc : allocate memory
+ *Input params
+ * size : required memory size
+ *return value
+ * void * : pointer to allocate memory or NULL
+ ****************************************************************************/
+
+void * memAlloc(int size)
+{
+ void * addr;
+ if(size == 0) return NULL;
+ addr = malloc(size);
+ if(!addr){
+ printf("Failed to allocate memory");
+ exit(1);
+ }
+ return addr;
+}
+
+/*****************************************************************************
+ *Function name
+ * allocAndCopy : allocate memory and initialize it
+ *Input params
+ * str : string to be put in memory
+ *return value
+ * char * : pointer to allocate memory or NULL
+ ****************************************************************************/
+
+char *allocAndCopy(char *str)
+{
+ char * addr;
+ if(str == NULL) return NULL;
+ addr = (char *)memAlloc(strlen(str)+1);
+ strcpy(addr,str);
+ return addr;
+}
+
+/**************************************************************************
+ * Function :
+ * getTypeAttributes
+ * Description :
+ * Read the attribute from the input file.
+ *
+ * Parameters :
+ * in , input file handle.
+ * t , the type descriptor to fill.
+ *
+ **************************************************************************/
+
+void getTypeAttributes(parse_file *in, type_descriptor *t)
+{
+ char * token;
+ char car;
+
+ t->fmt = NULL;
+ t->size = -1;
+ t->alignment = 0;
+
+ while(1) {
+ token = getToken(in);
+ if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+ ungetToken(in);
+ break;
+ }
+
+ if(!strcmp("format",token)) {
+ getEqual(in);
+ t->fmt = allocAndCopy(getQuotedString(in));
+ //} else if(!strcmp("name",token)) {
+ // getEqual(in);
+ // car = seekNextChar(in);
+ // if(car == EOF) in->error(in,"name was expected");
+ // else if(car == '\"') t->type_name = allocAndCopy(getQuotedString(in));
+ // else t->type_name = allocAndCopy(getName(in));
+ } else if(!strcmp("size",token)) {
+ getEqual(in);
+ t->size = getSize(in);
+ } else if(!strcmp("align",token)) {
+ getEqual(in);
+ t->alignment = getNumber(in);
+ }
+ }
+}
+
+/**************************************************************************
+ * Function :
+ * getEventAttributes
+ * Description :
+ * Read the attribute from the input file.
+ *
+ * Parameters :
+ * in , input file handle.
+ * ev , the event to fill.
+ *
+ **************************************************************************/
+
+void getEventAttributes(parse_file *in, event *ev)
+{
+ char * token;
+ char car;
+
+ ev->name = NULL;
+ ev->per_trace = 0;
+ ev->per_tracefile = 0;
+
+ while(1) {
+ token = getToken(in);
+ if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+ ungetToken(in);
+ break;
+ }
+
+ if(!strcmp("name",token)) {
+ getEqual(in);
+ car = seekNextChar(in);
+ if(car == EOF) in->error(in,"name was expected");
+ else if(car == '\"') ev->name = allocAndCopy(getQuotedString(in));
+ else ev->name = allocAndCopy(getName(in));
+ } else if(!strcmp("per_trace", token)) {
+ ev->per_trace = 1;
+ } else if(!strcmp("per_tracefile", token)) {
+ ev->per_tracefile = 1;
+ }
+
+ }
+}
+
+/**************************************************************************
+ * Function :
+ * getFacilityAttributes
+ * Description :
+ * Read the attribute from the input file.
+ *
+ * Parameters :
+ * in , input file handle.
+ * fac , the facility to fill.
+ *
+ **************************************************************************/
+
+void getFacilityAttributes(parse_file *in, facility *fac)
+{
+ char * token;
+ char car;
+
+ fac->name = NULL;
+
+ while(1) {
+ token = getToken(in);
+ if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+ ungetToken(in);
+ break;
+ }
+
+ if(!strcmp("name",token)) {
+ getEqual(in);
+ car = seekNextChar(in);
+ if(car == EOF) in->error(in,"name was expected");
+ else if(car == '\"') fac->name = allocAndCopy(getQuotedString(in));
+ else fac->name = allocAndCopy(getName(in));
+ }
+ }
+}
+
+/**************************************************************************
+ * Function :
+ * getFieldAttributes
+ * Description :
+ * Read the attribute from the input file.
+ *
+ * Parameters :
+ * in , input file handle.
+ * f , the field to fill.
+ *
+ **************************************************************************/
+
+void getFieldAttributes(parse_file *in, field *f)
+{
+ char * token;
+ char car;
+
+ f->name = NULL;
+
+ while(1) {
+ token = getToken(in);
+ if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+ ungetToken(in);
+ break;
+ }
+
+ if(!strcmp("name",token)) {
+ getEqual(in);
+ car = seekNextChar(in);
+ if(car == EOF) in->error(in,"name was expected");
+ else if(car == '\"') f->name = allocAndCopy(getQuotedString(in));
+ else f->name = allocAndCopy(getName(in));
+ }
+ }
+}
+
+char *getNameAttribute(parse_file *in)
+{
+ char * token;
+ char *name = NULL;
+ char car;
+
+ while(1) {
+ token = getToken(in);
+ if(strcmp("/",token) == 0 || strcmp(">",token) == 0){
+ ungetToken(in);
+ break;
+ }
+
+ if(!strcmp("name",token)) {
+ getEqual(in);
+ car = seekNextChar(in);
+ if(car == EOF) in->error(in,"name was expected");
+ else if(car == '\"') name = allocAndCopy(getQuotedString(in));
+ else name = allocAndCopy(getName(in));
+ }
+ }
+ if(name == NULL) in->error(in, "Name was expected");
+ return name;
+
+}
+
+
+
+//for <label name=label_name value=n format="..."/>, value is an option
+char * getValueStrAttribute(parse_file *in)
+{
+ char * token;
+
+ token = getToken(in);
+ if(strcmp("/",token) == 0){
+ ungetToken(in);
+ return NULL;
+ }
+
+ if(strcmp("value",token))in->error(in,"value was expected");
+ getEqual(in);
+ token = getToken(in);
+ if(in->type != NUMBER) in->error(in,"number was expected");
+ return token;
+}
+
+char * getDescription(parse_file *in)
+{
+ long int pos;
+ char * token, car, *str;
+
+ pos = ftell(in->fp);
+
+ getLAnglebracket(in);
+ token = getName(in);
+ if(strcmp("description",token)){
+ fseek(in->fp, pos, SEEK_SET);
+ return NULL;
+ }
+
+ getRAnglebracket(in);
+
+ pos = 0;
+ while((car = getc(in->fp)) != EOF) {
+ if(car == '<') break;
+ if(car == '\0') continue;
+ in->buffer[pos] = car;
+ pos++;
+ }
+ if(car == EOF)in->error(in,"not a valid description");
+ in->buffer[pos] = '\0';
+
+ str = allocAndCopy(in->buffer);
+
+ getForwardslash(in);
+ token = getName(in);
+ if(strcmp("description", token))in->error(in,"not a valid description");
+ getRAnglebracket(in);
+
+ return str;
+}
+
+/*****************************************************************************
+ *Function name
+ * parseFacility : generate event list
+ *Input params
+ * in : input file handle
+ * fac : empty facility
+ *Output params
+ * fac : facility filled with event list
+ ****************************************************************************/
+
+void parseFacility(parse_file *in, facility * fac)
+{
+ char * token;
+ event *ev;
+
+ getFacilityAttributes(in, fac);
+ if(fac->name == NULL) in->error(in, "Attribute not named");
+
+ fac->capname = allocAndCopy(fac->name);
+ strupper(fac->capname);
+ getRAnglebracket(in);
+
+ fac->description = getDescription(in);
+
+ while(1){
+ getLAnglebracket(in);
+
+ token = getToken(in);
+ if(in->type == ENDFILE)
+ in->error(in,"the definition of the facility is not finished");
+
+ if(strcmp("event",token) == 0){
+ ev = (event*) memAlloc(sizeof(event));
+ sequence_push(&(fac->events),ev);
+ parseEvent(in,ev, &(fac->unnamed_types), &(fac->named_types));
+ }else if(strcmp("type",token) == 0){
+ parseTypeDefinition(in, &(fac->unnamed_types), &(fac->named_types));
+ }else if(in->type == FORWARDSLASH){
+ break;
+ }else in->error(in,"event or type token expected\n");
+ }
+
+ token = getName(in);
+ if(strcmp("facility",token)) in->error(in,"not the end of the facility");
+ getRAnglebracket(in); //</facility>
+}
+
+/*****************************************************************************
+ *Function name
+ * parseEvent : generate event from event definition
+ *Input params
+ * in : input file handle
+ * ev : new event
+ * unnamed_types : array of unamed types
+ * named_types : array of named types
+ *Output params
+ * ev : new event (parameters are passed to it)
+ ****************************************************************************/
+
+void parseEvent(parse_file *in, event * ev, sequence * unnamed_types,
+ table * named_types)
+{
+ char *token;
+ type_descriptor *t;
+
+ //<event name=eventtype_name>
+ getEventAttributes(in, ev);
+ if(ev->name == NULL) in->error(in, "Event not named");
+ getRAnglebracket(in);
+
+ //<description>...</descriptio>
+ ev->description = getDescription(in);
+
+ //event can have STRUCT, TYPEREF or NOTHING
+ getLAnglebracket(in);
+
+ token = getToken(in);
+ if(in->type == FORWARDSLASH){ //</event> NOTHING
+ ev->type = NULL;
+ }else if(in->type == NAME){
+ if(strcmp("struct",token)==0 || strcmp("typeref",token)==0){
+ ungetToken(in);
+ ev->type = parseType(in,NULL, unnamed_types, named_types);
+ if(ev->type->type != STRUCT && ev->type->type != NONE)
+ in->error(in,"type must be a struct");
+ }else in->error(in, "not a valid type");
+
+ getLAnglebracket(in);
+ getForwardslash(in);
+ }else in->error(in,"not a struct type");
+
+ token = getName(in);
+ if(strcmp("event",token))in->error(in,"not an event definition");
+ getRAnglebracket(in); //</event>
+}
+
+/*****************************************************************************
+ *Function name
+ * parseField : get field infomation from buffer
+ *Input params
+ * in : input file handle
+ * t : type descriptor
+ * unnamed_types : array of unamed types
+ * named_types : array of named types
+ ****************************************************************************/
+
+void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types,
+ table * named_types)
+{
+ char * token;
+ field *f;
+
+ f = (field *)memAlloc(sizeof(field));
+ sequence_push(&(t->fields),f);
+
+ //<field name=field_name> <description> <type> </field>
+ getFieldAttributes(in, f);
+ if(f->name == NULL) in->error(in, "Field not named");
+ getRAnglebracket(in);
+
+ f->description = getDescription(in);
+
+ //<int size=...>
+ getLAnglebracket(in);
+ f->type = parseType(in,NULL, unnamed_types, named_types);
+
+ getLAnglebracket(in);
+ getForwardslash(in);
+ token = getName(in);
+ if(strcmp("field",token))in->error(in,"not a valid field definition");
+ getRAnglebracket(in); //</field>
+}
+
+
+/*****************************************************************************
+ *Function name
+ * parseType : get type information, type can be :
+ * Primitive:
+ * int(size,fmt); uint(size,fmt); float(size,fmt);
+ * string(fmt); enum(size,fmt,(label1,label2...))
+ * Compound:
+ * array(arraySize, type); sequence(lengthSize,type)
+ * struct(field(name,type,description)...)
+ * type name:
+ * type(name,type)
+ *Input params
+ * in : input file handle
+ * inType : a type descriptor
+ * unnamed_types : array of unamed types
+ * named_types : array of named types
+ *Return values
+ * type_descriptor* : a type descriptor
+ ****************************************************************************/
+
+type_descriptor *parseType(parse_file *in, type_descriptor *inType,
+ sequence * unnamed_types, table * named_types)
+{
+ char *token;
+ type_descriptor *t;
+
+ if(inType == NULL) {
+ t = (type_descriptor *) memAlloc(sizeof(type_descriptor));
+ t->type_name = NULL;
+ t->type = NONE;
+ t->fmt = NULL;
+ sequence_push(unnamed_types,t);
+ }
+ else t = inType;
+
+ token = getName(in);
+
+ if(strcmp(token,"struct") == 0) {
+ t->type = STRUCT;
+ getTypeAttributes(in, t);
+ getRAnglebracket(in); //<struct>
+ getLAnglebracket(in); //<field name=..>
+ token = getToken(in);
+ sequence_init(&(t->fields));
+ while(strcmp("field",token) == 0){
+ parseFields(in,t, unnamed_types, named_types);
+
+ //next field
+ getLAnglebracket(in);
+ token = getToken(in);
+ }
+ if(strcmp("/",token))in->error(in,"not a valid structure definition");
+ token = getName(in);
+ if(strcmp("struct",token)!=0)
+ in->error(in,"not a valid structure definition");
+ getRAnglebracket(in); //</struct>
+ }
+ else if(strcmp(token,"union") == 0) {
+ t->type = UNION;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "Union has empty size");
+ getRAnglebracket(in); //<union typecodesize=isize>
+
+ getLAnglebracket(in); //<field name=..>
+ token = getToken(in);
+ sequence_init(&(t->fields));
+ while(strcmp("field",token) == 0){
+ parseFields(in,t, unnamed_types, named_types);
+
+ //next field
+ getLAnglebracket(in);
+ token = getToken(in);
+ }
+ if(strcmp("/",token))in->error(in,"not a valid union definition");
+ token = getName(in);
+ if(strcmp("union",token)!=0)
+ in->error(in,"not a valid union definition");
+ getRAnglebracket(in); //</union>
+ }
+ else if(strcmp(token,"array") == 0) {
+ t->type = ARRAY;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "Array has empty size");
+ getRAnglebracket(in); //<array size=n>
+
+ getLAnglebracket(in); //<type struct>
+ t->nested_type = parseType(in, NULL, unnamed_types, named_types);
+
+ getLAnglebracket(in); //</array>
+ getForwardslash(in);
+ token = getName(in);
+ if(strcmp("array",token))in->error(in,"not a valid array definition");
+ getRAnglebracket(in); //</array>
+ }
+ else if(strcmp(token,"sequence") == 0) {
+ t->type = SEQUENCE;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "Sequence has empty size");
+ getRAnglebracket(in); //<array lengthsize=isize>
+
+ getLAnglebracket(in); //<type struct>
+ t->nested_type = parseType(in,NULL, unnamed_types, named_types);
+
+ getLAnglebracket(in); //</sequence>
+ getForwardslash(in);
+ token = getName(in);
+ if(strcmp("sequence",token))in->error(in,"not a valid sequence definition");
+ getRAnglebracket(in); //</sequence>
+ }
+ else if(strcmp(token,"enum") == 0) {
+ char * str, *str1;
+ t->type = ENUM;
+ sequence_init(&(t->labels));
+ sequence_init(&(t->labels_description));
+ t->already_printed = 0;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "Sequence has empty size");
+ getRAnglebracket(in);
+
+ //<label name=label1 value=n/>
+ getLAnglebracket(in);
+ token = getToken(in); //"label" or "/"
+ while(strcmp("label",token) == 0){
+ str = allocAndCopy(getNameAttribute(in));
+ token = getValueStrAttribute(in);
+ if(token){
+ str1 = appendString(str,"=");
+ free(str);
+ str = appendString(str1,token);
+ free(str1);
+ sequence_push(&(t->labels),str);
+ }
+ else
+ sequence_push(&(t->labels),str);
+
+ getForwardslash(in);
+ getRAnglebracket(in);
+
+ //read description if any. May be NULL.
+ str = allocAndCopy(getDescription(in));
+ sequence_push(&(t->labels_description),str);
+
+ //next label definition
+ getLAnglebracket(in);
+ token = getToken(in); //"label" or "/"
+ }
+ if(strcmp("/",token))in->error(in, "not a valid enum definition");
+ token = getName(in);
+ if(strcmp("enum",token))in->error(in, "not a valid enum definition");
+ getRAnglebracket(in); //</label>
+ }
+ else if(strcmp(token,"int") == 0) {
+ t->type = INT;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "int has empty size");
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"uint") == 0) {
+ t->type = UINT;
+ getTypeAttributes(in, t);
+ if(t->size == -1) in->error(in, "uint has empty size");
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"pointer") == 0) {
+ t->type = POINTER;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"long") == 0) {
+ t->type = LONG;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"ulong") == 0) {
+ t->type = ULONG;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"size_t") == 0) {
+ t->type = SIZE_T;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"ssize_t") == 0) {
+ t->type = SSIZE_T;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"off_t") == 0) {
+ t->type = OFF_T;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"float") == 0) {
+ t->type = FLOAT;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"string") == 0) {
+ t->type = STRING;
+ getTypeAttributes(in, t);
+ getForwardslash(in);
+ getRAnglebracket(in);
+ }
+ else if(strcmp(token,"typeref") == 0){
+ // Must be a named type
+ if(inType != NULL)
+ in->error(in,"Named type cannot refer to a named type");
+ else {
+ free(t);
+ sequence_pop(unnamed_types);
+ token = getNameAttribute(in);
+ t = find_named_type(token, named_types);
+ getForwardslash(in); //<typeref name=type_name/>
+ getRAnglebracket(in);
+ return t;
+ }
+ }else in->error(in,"not a valid type");
+
+ return t;
+}
+
+/*****************************************************************************
+ *Function name
+ * find_named_type : find a named type from hash table
+ *Input params
+ * name : type name
+ * named_types : array of named types
+ *Return values
+ * type_descriptor * : a type descriptor
+ *****************************************************************************/
+
+type_descriptor * find_named_type(char *name, table * named_types)
+{
+ type_descriptor *t;
+
+ t = table_find(named_types,name);
+ if(t == NULL) {
+ t = (type_descriptor *)memAlloc(sizeof(type_descriptor));
+ t->type_name = allocAndCopy(name);
+ t->type = NONE;
+ t->fmt = NULL;
+ table_insert(named_types,t->type_name,t);
+ // table_insert(named_types,allocAndCopy(name),t);
+ }
+ return t;
+}
+
+/*****************************************************************************
+ *Function name
+ * parseTypeDefinition : get type information from type definition
+ *Input params
+ * in : input file handle
+ * unnamed_types : array of unamed types
+ * named_types : array of named types
+ *****************************************************************************/
+
+void parseTypeDefinition(parse_file * in, sequence * unnamed_types,
+ table * named_types)
+{
+ char *token;
+ type_descriptor *t;
+
+ token = getNameAttribute(in);
+ if(token == NULL) in->error(in, "Type has empty name");
+ t = find_named_type(token, named_types);
+
+ if(t->type != NONE) in->error(in,"redefinition of named type");
+ getRAnglebracket(in); //<type name=type_name>
+ getLAnglebracket(in); //<
+ token = getName(in);
+ //MD ??if(strcmp("struct",token))in->error(in,"not a valid type definition");
+ ungetToken(in);
+ parseType(in,t, unnamed_types, named_types);
+
+ //</type>
+ getLAnglebracket(in);
+ getForwardslash(in);
+ token = getName(in);
+ if(strcmp("type",token))in->error(in,"not a valid type definition");
+ getRAnglebracket(in); //</type>
+}
+
+/**************************************************************************
+ * Function :
+ * getComa, getName, getNumber, getEqual
+ * Description :
+ * Read a token from the input file, check its type, return it scontent.
+ *
+ * Parameters :
+ * in , input file handle.
+ *
+ * Return values :
+ * address of token content.
+ *
+ **************************************************************************/
+
+char *getName(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != NAME) in->error(in,"Name token was expected");
+ return token;
+}
+
+int getNumber(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != NUMBER) in->error(in, "Number token was expected");
+ return atoi(token);
+}
+
+char *getForwardslash(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != FORWARDSLASH) in->error(in, "forward slash token was expected");
+ return token;
+}
+
+char *getLAnglebracket(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != LANGLEBRACKET) in->error(in, "Left angle bracket was expected");
+ return token;
+}
+
+char *getRAnglebracket(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != RANGLEBRACKET) in->error(in, "Right angle bracket was expected");
+ return token;
+}
+
+char *getQuotedString(parse_file * in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != QUOTEDSTRING) in->error(in, "quoted string was expected");
+ return token;
+}
+
+char * getEqual(parse_file *in)
+{
+ char *token;
+
+ token = getToken(in);
+ if(in->type != EQUAL) in->error(in, "equal was expected");
+ return token;
+}
+
+char seekNextChar(parse_file *in)
+{
+ char car;
+ while((car = getc(in->fp)) != EOF) {
+ if(!isspace(car)){
+ ungetc(car,in->fp);
+ return car;
+ }
+ }
+ return EOF;
+}
+
+/******************************************************************
+ * Function :
+ * getToken, ungetToken
+ * Description :
+ * Read a token from the input file and return its type and content.
+ * Line numbers are accounted for and whitespace/comments are skipped.
+ *
+ * Parameters :
+ * in, input file handle.
+ *
+ * Return values :
+ * address of token content.
+ *
+ ******************************************************************/
+
+void ungetToken(parse_file * in)
+{
+ in->unget = 1;
+}
+
+char *getToken(parse_file * in)
+{
+ FILE *fp = in->fp;
+ char car, car1;
+ int pos = 0, escaped;
+
+ if(in->unget == 1) {
+ in->unget = 0;
+ return in->buffer;
+ }
+
+ /* skip whitespace and comments */
+
+ while((car = getc(fp)) != EOF) {
+ if(car == '/') {
+ car1 = getc(fp);
+ if(car1 == '*') skipComment(in);
+ else if(car1 == '/') skipEOL(in);
+ else {
+ car1 = ungetc(car1,fp);
+ break;
+ }
+ }
+ else if(car == '\n') in->lineno++;
+ else if(!isspace(car)) break;
+ }
+
+ switch(car) {
+ case EOF:
+ in->type = ENDFILE;
+ break;
+ case '/':
+ in->type = FORWARDSLASH;
+ in->buffer[pos] = car;
+ pos++;
+ break;
+ case '<':
+ in->type = LANGLEBRACKET;
+ in->buffer[pos] = car;
+ pos++;
+ break;
+ case '>':
+ in->type = RANGLEBRACKET;
+ in->buffer[pos] = car;
+ pos++;
+ break;
+ case '=':
+ in->type = EQUAL;
+ in->buffer[pos] = car;
+ pos++;
+ break;
+ case '"':
+ escaped = 0;
+ while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) {
+ if(car == '\\' && escaped == 0) {
+ in->buffer[pos] = car;
+ pos++;
+ escaped = 1;
+ continue;
+ }
+ if(car == '"' && escaped == 0) break;
+ if(car == '\n' && escaped == 0) {
+ in->error(in, "non escaped newline inside quoted string");
+ }
+ if(car == '\n') in->lineno++;
+ in->buffer[pos] = car;
+ pos++;
+ escaped = 0;
+ }
+ if(car == EOF) in->error(in,"no ending quotemark");
+ if(pos == BUFFER_SIZE) in->error(in, "quoted string token too large");
+ in->type = QUOTEDSTRING;
+ break;
+ default:
+ if(isdigit(car)) {
+ in->buffer[pos] = car;
+ pos++;
+ while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) {
+ if(!isdigit(car)) {
+ ungetc(car,fp);
+ break;
+ }
+ in->buffer[pos] = car;
+ pos++;
+ }
+ if(car == EOF) ungetc(car,fp);
+ if(pos == BUFFER_SIZE) in->error(in, "number token too large");
+ in->type = NUMBER;
+ }
+ else if(isalpha(car)) {
+ in->buffer[0] = car;
+ pos = 1;
+ while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) {
+ if(!(isalnum(car) || car == '_')) {
+ ungetc(car,fp);
+ break;
+ }
+ in->buffer[pos] = car;
+ pos++;
+ }
+ if(car == EOF) ungetc(car,fp);
+ if(pos == BUFFER_SIZE) in->error(in, "name token too large");
+ in->type = NAME;
+ }
+ else in->error(in, "invalid character, unrecognized token");
+ }
+ in->buffer[pos] = 0;
+ return in->buffer;
+}
+
+void skipComment(parse_file * in)
+{
+ char car;
+ while((car = getc(in->fp)) != EOF) {
+ if(car == '\n') in->lineno++;
+ else if(car == '*') {
+ car = getc(in->fp);
+ if(car ==EOF) break;
+ if(car == '/') return;
+ ungetc(car,in->fp);
+ }
+ }
+ if(car == EOF) in->error(in,"comment begining with '/*' has no ending '*/'");
+}
+
+void skipEOL(parse_file * in)
+{
+ char car;
+ while((car = getc(in->fp)) != EOF) {
+ if(car == '\n') {
+ ungetc(car,in->fp);
+ break;
+ }
+ }
+ if(car == EOF)ungetc(car, in->fp);
+}
+
+/*****************************************************************************
+ *Function name
+ * checkNamedTypesImplemented : check if all named types have definition
+ ****************************************************************************/
+
+void checkNamedTypesImplemented(table * named_types)
+{
+ type_descriptor *t;
+ int pos;
+ char str[256];
+
+ for(pos = 0 ; pos < named_types->values.position; pos++) {
+ t = (type_descriptor *) named_types->values.array[pos];
+ if(t->type == NONE){
+ sprintf(str,"named type '%s' has no definition",(char*)named_types->keys.array[pos]);
+ error_callback(NULL,str);
+ }
+ }
+}
+
+
+/*****************************************************************************
+ *Function name
+ * generateChecksum : generate checksum for the facility
+ *Input Params
+ * facName : name of facility
+ *Output Params
+ * checksum : checksum for the facility
+ ****************************************************************************/
+
+void generateChecksum( char* facName, unsigned long * checksum, sequence * events)
+{
+ unsigned long crc ;
+ int pos;
+ event * ev;
+ char str[256];
+
+ crc = crc32(facName);
+ for(pos = 0; pos < events->position; pos++){
+ ev = (event *)(events->array[pos]);
+ crc = partial_crc32(ev->name,crc);
+ if(!ev->type) continue; //event without type
+ if(ev->type->type != STRUCT){
+ sprintf(str,"event '%s' has a type other than STRUCT",ev->name);
+ error_callback(NULL, str);
+ }
+ crc = getTypeChecksum(crc, ev->type);
+ }
+ *checksum = crc;
+}
+
+/*****************************************************************************
+ *Function name
+ * getTypeChecksum : generate checksum by type info
+ *Input Params
+ * crc : checksum generated so far
+ * type : type descriptor containing type info
+ *Return value
+ * unsigned long : checksum
+ *****************************************************************************/
+
+unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type)
+{
+ unsigned long crc = aCrc;
+ char * str = NULL, buf[16];
+ int flag = 0, pos;
+ field * fld;
+
+ switch(type->type){
+ case INT:
+ str = intOutputTypes[type->size];
+ break;
+ case UINT:
+ str = uintOutputTypes[type->size];
+ break;
+ case POINTER:
+ str = allocAndCopy("void *");
+ flag = 1;
+ break;
+ case LONG:
+ str = allocAndCopy("long");
+ flag = 1;
+ break;
+ case ULONG:
+ str = allocAndCopy("unsigned long");
+ flag = 1;
+ break;
+ case SIZE_T:
+ str = allocAndCopy("size_t");
+ flag = 1;
+ break;
+ case SSIZE_T:
+ str = allocAndCopy("ssize_t");
+ flag = 1;
+ break;
+ case OFF_T:
+ str = allocAndCopy("off_t");
+ flag = 1;
+ break;
+ case FLOAT:
+ str = floatOutputTypes[type->size];
+ break;
+ case STRING:
+ str = allocAndCopy("string");
+ flag = 1;
+ break;
+ case ENUM:
+ str = appendString("enum ", uintOutputTypes[type->size]);
+ flag = 1;
+ break;
+ case ARRAY:
+ sprintf(buf,"%d\0",type->size);
+ str = appendString("array ",buf);
+ flag = 1;
+ break;
+ case SEQUENCE:
+ sprintf(buf,"%d\0",type->size);
+ str = appendString("sequence ",buf);
+ flag = 1;
+ break;
+ case STRUCT:
+ str = allocAndCopy("struct");
+ flag = 1;
+ break;
+ case UNION:
+ str = allocAndCopy("union");
+ flag = 1;
+ break;
+ default:
+ error_callback(NULL, "named type has no definition");
+ break;
+ }
+
+ crc = partial_crc32(str,crc);
+ if(flag) free(str);
+
+ if(type->fmt) crc = partial_crc32(type->fmt,crc);
+
+ if(type->type == ARRAY || type->type == SEQUENCE){
+ crc = getTypeChecksum(crc,type->nested_type);
+ }else if(type->type == STRUCT || type->type == UNION){
+ for(pos =0; pos < type->fields.position; pos++){
+ fld = (field *) type->fields.array[pos];
+ crc = partial_crc32(fld->name,crc);
+ crc = getTypeChecksum(crc, fld->type);
+ }
+ }else if(type->type == ENUM){
+ for(pos = 0; pos < type->labels.position; pos++)
+ crc = partial_crc32((char*)type->labels.array[pos],crc);
+ }
+
+ return crc;
+}
+
+
+/* Event type descriptors */
+void freeType(type_descriptor * tp)
+{
+ int pos2;
+ field *f;
+
+ if(tp->fmt != NULL) free(tp->fmt);
+ if(tp->type == ENUM) {
+ for(pos2 = 0; pos2 < tp->labels.position; pos2++) {
+ free(tp->labels.array[pos2]);
+ }
+ sequence_dispose(&(tp->labels));
+ }
+ if(tp->type == STRUCT) {
+ for(pos2 = 0; pos2 < tp->fields.position; pos2++) {
+ f = (field *) tp->fields.array[pos2];
+ free(f->name);
+ free(f->description);
+ free(f);
+ }
+ sequence_dispose(&(tp->fields));
+ }
+}
+
+void freeNamedType(table * t)
+{
+ int pos;
+ type_descriptor * td;
+
+ for(pos = 0 ; pos < t->keys.position; pos++) {
+ free((char *)t->keys.array[pos]);
+ td = (type_descriptor*)t->values.array[pos];
+ freeType(td);
+ free(td);
+ }
+}
+
+void freeTypes(sequence *t)
+{
+ int pos, pos2;
+ type_descriptor *tp;
+ field *f;
+
+ for(pos = 0 ; pos < t->position; pos++) {
+ tp = (type_descriptor *)t->array[pos];
+ freeType(tp);
+ free(tp);
+ }
+}
+
+void freeEvents(sequence *t)
+{
+ int pos;
+ event *ev;
+
+ for(pos = 0 ; pos < t->position; pos++) {
+ ev = (event *) t->array[pos];
+ free(ev->name);
+ free(ev->description);
+ free(ev);
+ }
+
+}
+
+
+/* Extensible array */
+
+void sequence_init(sequence *t)
+{
+ t->size = 10;
+ t->position = 0;
+ t->array = (void **)memAlloc(t->size * sizeof(void *));
+}
+
+void sequence_dispose(sequence *t)
+{
+ t->size = 0;
+ free(t->array);
+ t->array = NULL;
+}
+
+void sequence_push(sequence *t, void *elem)
+{
+ void **tmp;
+
+ if(t->position >= t->size) {
+ tmp = t->array;
+ t->array = (void **)memAlloc(t->size * 2 * sizeof(void *));
+ memcpy(t->array, tmp, t->size * sizeof(void *));
+ t->size = t->size * 2;
+ free(tmp);
+ }
+ t->array[t->position] = elem;
+ t->position++;
+}
+
+void *sequence_pop(sequence *t)
+{
+ return t->array[t->position--];
+}
+
+
+/* Hash table API, implementation is just linear search for now */
+
+void table_init(table *t)
+{
+ sequence_init(&(t->keys));
+ sequence_init(&(t->values));
+}
+
+void table_dispose(table *t)
+{
+ sequence_dispose(&(t->keys));
+ sequence_dispose(&(t->values));
+}
+
+void table_insert(table *t, char *key, void *value)
+{
+ sequence_push(&(t->keys),key);
+ sequence_push(&(t->values),value);
+}
+
+void *table_find(table *t, char *key)
+{
+ int pos;
+ for(pos = 0 ; pos < t->keys.position; pos++) {
+ if(strcmp((char *)key,(char *)t->keys.array[pos]) == 0)
+ return(t->values.array[pos]);
+ }
+ return NULL;
+}
+
+void table_insert_int(table *t, int *key, void *value)
+{
+ sequence_push(&(t->keys),key);
+ sequence_push(&(t->values),value);
+}
+
+void *table_find_int(table *t, int *key)
+{
+ int pos;
+ for(pos = 0 ; pos < t->keys.position; pos++) {
+ if(*key == *(int *)t->keys.array[pos])
+ return(t->values.array[pos]);
+ }
+ return NULL;
+}
+
+
+/* Concatenate strings */
+
+char *appendString(char *s, char *suffix)
+{
+ char *tmp;
+ if(suffix == NULL) return s;
+
+ tmp = (char *)memAlloc(strlen(s) + strlen(suffix) + 1);
+ strcpy(tmp,s);
+ strcat(tmp,suffix);
+ return tmp;
+}
+
+
projects / lttv.git / commitdiff
