--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/iniparser/iniparser.c Thu Jun 07 02:45:18 2012 +0200
@@ -0,0 +1,748 @@
+
+/*-------------------------------------------------------------------------*/
+/**
+ @file iniparser.c
+ @author N. Devillard
+ @brief Parser for ini files.
+*/
+/*--------------------------------------------------------------------------*/
+/*---------------------------- Includes ------------------------------------*/
+#include <ctype.h>
+#include "iniparser.h"
+
+/*---------------------------- Defines -------------------------------------*/
+#define ASCIILINESZ (1024)
+#define INI_INVALID_KEY ((char*)-1)
+
+/*---------------------------------------------------------------------------
+ Private to this module
+ ---------------------------------------------------------------------------*/
+/**
+ * This enum stores the status for each parsed line (internal use only).
+ */
+typedef enum _line_status_ {
+ LINE_UNPROCESSED,
+ LINE_ERROR,
+ LINE_EMPTY,
+ LINE_COMMENT,
+ LINE_SECTION,
+ LINE_VALUE
+} line_status ;
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Convert a string to lowercase.
+ @param s String to convert.
+ @return ptr to statically allocated string.
+
+ This function returns a pointer to a statically allocated string
+ containing a lowercased version of the input string. Do not free
+ or modify the returned string! Since the returned string is statically
+ allocated, it will be modified at each function call (not re-entrant).
+ */
+/*--------------------------------------------------------------------------*/
+static char * strlwc(const char * s)
+{
+ static char l[ASCIILINESZ+1];
+ int i ;
+
+ if (s==NULL) return NULL ;
+ memset(l, 0, ASCIILINESZ+1);
+ i=0 ;
+ while (s[i] && i<ASCIILINESZ) {
+ l[i] = (char)tolower((int)s[i]);
+ i++ ;
+ }
+ l[ASCIILINESZ]=(char)0;
+ return l ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Remove blanks at the beginning and the end of a string.
+ @param s String to parse.
+ @return ptr to statically allocated string.
+
+ This function returns a pointer to a statically allocated string,
+ which is identical to the input string, except that all blank
+ characters at the end and the beg. of the string have been removed.
+ Do not free or modify the returned string! Since the returned string
+ is statically allocated, it will be modified at each function call
+ (not re-entrant).
+ */
+/*--------------------------------------------------------------------------*/
+static char * strstrip(const char * s)
+{
+ static char l[ASCIILINESZ+1];
+ char * last ;
+
+ if (s==NULL) return NULL ;
+
+ while (isspace((int)*s) && *s) s++;
+ memset(l, 0, ASCIILINESZ+1);
+ strcpy(l, s);
+ last = l + strlen(l);
+ while (last > l) {
+ if (!isspace((int)*(last-1)))
+ break ;
+ last -- ;
+ }
+ *last = (char)0;
+ return (char*)l ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get number of sections in a dictionary
+ @param d Dictionary to examine
+ @return int Number of sections found in dictionary
+
+ This function returns the number of sections found in a dictionary.
+ The test to recognize sections is done on the string stored in the
+ dictionary: a section name is given as "section" whereas a key is
+ stored as "section:key", thus the test looks for entries that do not
+ contain a colon.
+
+ This clearly fails in the case a section name contains a colon, but
+ this should simply be avoided.
+
+ This function returns -1 in case of error.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getnsec(dictionary * d)
+{
+ int i ;
+ int nsec ;
+
+ if (d==NULL) return -1 ;
+ nsec=0 ;
+ for (i=0 ; i<d->size ; i++) {
+ if (d->key[i]==NULL)
+ continue ;
+ if (strchr(d->key[i], ':')==NULL) {
+ nsec ++ ;
+ }
+ }
+ return nsec ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get name for section n in a dictionary.
+ @param d Dictionary to examine
+ @param n Section number (from 0 to nsec-1).
+ @return Pointer to char string
+
+ This function locates the n-th section in a dictionary and returns
+ its name as a pointer to a string statically allocated inside the
+ dictionary. Do not free or modify the returned string!
+
+ This function returns NULL in case of error.
+ */
+/*--------------------------------------------------------------------------*/
+char * iniparser_getsecname(dictionary * d, int n)
+{
+ int i ;
+ int foundsec ;
+
+ if (d==NULL || n<0) return NULL ;
+ foundsec=0 ;
+ for (i=0 ; i<d->size ; i++) {
+ if (d->key[i]==NULL)
+ continue ;
+ if (strchr(d->key[i], ':')==NULL) {
+ foundsec++ ;
+ if (foundsec>n)
+ break ;
+ }
+ }
+ if (foundsec<=n) {
+ return NULL ;
+ }
+ return d->key[i] ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Dump a dictionary to an opened file pointer.
+ @param d Dictionary to dump.
+ @param f Opened file pointer to dump to.
+ @return void
+
+ This function prints out the contents of a dictionary, one element by
+ line, onto the provided file pointer. It is OK to specify @c stderr
+ or @c stdout as output files. This function is meant for debugging
+ purposes mostly.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_dump(dictionary * d, FILE * f)
+{
+ int i ;
+
+ if (d==NULL || f==NULL) return ;
+ for (i=0 ; i<d->size ; i++) {
+ if (d->key[i]==NULL)
+ continue ;
+ if (d->val[i]!=NULL) {
+ fprintf(f, "[%s]=[%s]\n", d->key[i], d->val[i]);
+ } else {
+ fprintf(f, "[%s]=UNDEF\n", d->key[i]);
+ }
+ }
+ return ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Save a dictionary to a loadable ini file
+ @param d Dictionary to dump
+ @param f Opened file pointer to dump to
+ @return void
+
+ This function dumps a given dictionary into a loadable ini file.
+ It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_dump_ini(dictionary * d, FILE * f)
+{
+ int i ;
+ int nsec ;
+ char * secname ;
+
+ if (d==NULL || f==NULL) return ;
+
+ nsec = iniparser_getnsec(d);
+ if (nsec<1) {
+ /* No section in file: dump all keys as they are */
+ for (i=0 ; i<d->size ; i++) {
+ if (d->key[i]==NULL)
+ continue ;
+ fprintf(f, "%s = %s\n", d->key[i], d->val[i]);
+ }
+ return ;
+ }
+ for (i=0 ; i<nsec ; i++) {
+ secname = iniparser_getsecname(d, i) ;
+ iniparser_dumpsection_ini(d, secname, f) ;
+ }
+ fprintf(f, "\n");
+ return ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Save a dictionary section to a loadable ini file
+ @param d Dictionary to dump
+ @param s Section name of dictionary to dump
+ @param f Opened file pointer to dump to
+ @return void
+
+ This function dumps a given section of a given dictionary into a loadable ini
+ file. It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_dumpsection_ini(dictionary * d, char * s, FILE * f)
+{
+ int j ;
+ char keym[ASCIILINESZ+1];
+ int seclen ;
+
+ if (d==NULL || f==NULL) return ;
+ if (! iniparser_find_entry(d, s)) return ;
+
+ seclen = (int)strlen(s);
+ fprintf(f, "\n[%s]\n", s);
+ sprintf(keym, "%s:", s);
+ for (j=0 ; j<d->size ; j++) {
+ if (d->key[j]==NULL)
+ continue ;
+ if (!strncmp(d->key[j], keym, seclen+1)) {
+ fprintf(f,
+ "%-30s = %s\n",
+ d->key[j]+seclen+1,
+ d->val[j] ? d->val[j] : "");
+ }
+ }
+ fprintf(f, "\n");
+ return ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the number of keys in a section of a dictionary.
+ @param d Dictionary to examine
+ @param s Section name of dictionary to examine
+ @return Number of keys in section
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getsecnkeys(dictionary * d, char * s)
+{
+ int seclen, nkeys ;
+ char keym[ASCIILINESZ+1];
+ int j ;
+
+ nkeys = 0;
+
+ if (d==NULL) return nkeys;
+ if (! iniparser_find_entry(d, s)) return nkeys;
+
+ seclen = (int)strlen(s);
+ sprintf(keym, "%s:", s);
+
+ for (j=0 ; j<d->size ; j++) {
+ if (d->key[j]==NULL)
+ continue ;
+ if (!strncmp(d->key[j], keym, seclen+1))
+ nkeys++;
+ }
+
+ return nkeys;
+
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the number of keys in a section of a dictionary.
+ @param d Dictionary to examine
+ @param s Section name of dictionary to examine
+ @return pointer to statically allocated character strings
+
+ This function queries a dictionary and finds all keys in a given section.
+ Each pointer in the returned char pointer-to-pointer is pointing to
+ a string allocated in the dictionary; do not free or modify them.
+
+ This function returns NULL in case of error.
+ */
+/*--------------------------------------------------------------------------*/
+char ** iniparser_getseckeys(dictionary * d, char * s)
+{
+
+ char **keys;
+
+ int i, j ;
+ char keym[ASCIILINESZ+1];
+ int seclen, nkeys ;
+
+ keys = NULL;
+
+ if (d==NULL) return keys;
+ if (! iniparser_find_entry(d, s)) return keys;
+
+ nkeys = iniparser_getsecnkeys(d, s);
+
+ keys = (char**) malloc(nkeys*sizeof(char*));
+
+ seclen = (int)strlen(s);
+ sprintf(keym, "%s:", s);
+
+ i = 0;
+
+ for (j=0 ; j<d->size ; j++) {
+ if (d->key[j]==NULL)
+ continue ;
+ if (!strncmp(d->key[j], keym, seclen+1)) {
+ keys[i] = d->key[j];
+ i++;
+ }
+ }
+
+ return keys;
+
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param def Default value to return if key not found.
+ @return pointer to statically allocated character string
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the pointer passed as 'def' is returned.
+ The returned char pointer is pointing to a string allocated in
+ the dictionary, do not free or modify it.
+ */
+/*--------------------------------------------------------------------------*/
+char * iniparser_getstring(dictionary * d, const char * key, char * def)
+{
+ char * lc_key ;
+ char * sval ;
+
+ if (d==NULL || key==NULL)
+ return def ;
+
+ lc_key = strlwc(key);
+ sval = dictionary_get(d, lc_key, def);
+ return sval ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to an int
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return integer
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+
+ Supported values for integers include the usual C notation
+ so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
+ are supported. Examples:
+
+ "42" -> 42
+ "042" -> 34 (octal -> decimal)
+ "0x42" -> 66 (hexa -> decimal)
+
+ Warning: the conversion may overflow in various ways. Conversion is
+ totally outsourced to strtol(), see the associated man page for overflow
+ handling.
+
+ Credits: Thanks to A. Becker for suggesting strtol()
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getint(dictionary * d, const char * key, int notfound)
+{
+ char * str ;
+
+ str = iniparser_getstring(d, key, INI_INVALID_KEY);
+ if (str==INI_INVALID_KEY) return notfound ;
+ return (int)strtol(str, NULL, 0);
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to a double
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return double
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+ */
+/*--------------------------------------------------------------------------*/
+double iniparser_getdouble(dictionary * d, const char * key, double notfound)
+{
+ char * str ;
+
+ str = iniparser_getstring(d, key, INI_INVALID_KEY);
+ if (str==INI_INVALID_KEY) return notfound ;
+ return atof(str);
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to a boolean
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return integer
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+
+ A true boolean is found if one of the following is matched:
+
+ - A string starting with 'y'
+ - A string starting with 'Y'
+ - A string starting with 't'
+ - A string starting with 'T'
+ - A string starting with '1'
+
+ A false boolean is found if one of the following is matched:
+
+ - A string starting with 'n'
+ - A string starting with 'N'
+ - A string starting with 'f'
+ - A string starting with 'F'
+ - A string starting with '0'
+
+ The notfound value returned if no boolean is identified, does not
+ necessarily have to be 0 or 1.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getboolean(dictionary * d, const char * key, int notfound)
+{
+ char * c ;
+ int ret ;
+
+ c = iniparser_getstring(d, key, INI_INVALID_KEY);
+ if (c==INI_INVALID_KEY) return notfound ;
+ if (c[0]=='y' || c[0]=='Y' || c[0]=='1' || c[0]=='t' || c[0]=='T') {
+ ret = 1 ;
+ } else if (c[0]=='n' || c[0]=='N' || c[0]=='0' || c[0]=='f' || c[0]=='F') {
+ ret = 0 ;
+ } else {
+ ret = notfound ;
+ }
+ return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Finds out if a given entry exists in a dictionary
+ @param ini Dictionary to search
+ @param entry Name of the entry to look for
+ @return integer 1 if entry exists, 0 otherwise
+
+ Finds out if a given entry exists in the dictionary. Since sections
+ are stored as keys with NULL associated values, this is the only way
+ of querying for the presence of sections in a dictionary.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_find_entry(
+ dictionary * ini,
+ const char * entry
+)
+{
+ int found=0 ;
+ if (iniparser_getstring(ini, entry, INI_INVALID_KEY)!=INI_INVALID_KEY) {
+ found = 1 ;
+ }
+ return found ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Set an entry in a dictionary.
+ @param ini Dictionary to modify.
+ @param entry Entry to modify (entry name)
+ @param val New value to associate to the entry.
+ @return int 0 if Ok, -1 otherwise.
+
+ If the given entry can be found in the dictionary, it is modified to
+ contain the provided value. If it cannot be found, -1 is returned.
+ It is Ok to set val to NULL.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_set(dictionary * ini, const char * entry, const char * val)
+{
+ return dictionary_set(ini, strlwc(entry), val) ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Delete an entry in a dictionary
+ @param ini Dictionary to modify
+ @param entry Entry to delete (entry name)
+ @return void
+
+ If the given entry can be found, it is deleted from the dictionary.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_unset(dictionary * ini, const char * entry)
+{
+ dictionary_unset(ini, strlwc(entry));
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Load a single line from an INI file
+ @param input_line Input line, may be concatenated multi-line input
+ @param section Output space to store section
+ @param key Output space to store key
+ @param value Output space to store value
+ @return line_status value
+ */
+/*--------------------------------------------------------------------------*/
+static line_status iniparser_line(
+ const char * input_line,
+ char * section,
+ char * key,
+ char * value)
+{
+ line_status sta ;
+ char line[ASCIILINESZ+1];
+ int len ;
+
+ strcpy(line, strstrip(input_line));
+ len = (int)strlen(line);
+
+ sta = LINE_UNPROCESSED ;
+ if (len<1) {
+ /* Empty line */
+ sta = LINE_EMPTY ;
+ } else if (line[0]=='#' || line[0]==';') {
+ /* Comment line */
+ sta = LINE_COMMENT ;
+ } else if (line[0]=='[' && line[len-1]==']') {
+ /* Section name */
+ sscanf(line, "[%[^]]", section);
+ strcpy(section, strstrip(section));
+ strcpy(section, strlwc(section));
+ sta = LINE_SECTION ;
+ } else if (sscanf (line, "%[^=] = \"%[^\"]\"", key, value) == 2
+ || sscanf (line, "%[^=] = '%[^\']'", key, value) == 2
+ || sscanf (line, "%[^=] = %[^;#]", key, value) == 2) {
+ /* Usual key=value, with or without comments */
+ strcpy(key, strstrip(key));
+ strcpy(key, strlwc(key));
+ strcpy(value, strstrip(value));
+ /*
+ * sscanf cannot handle '' or "" as empty values
+ * this is done here
+ */
+ if (!strcmp(value, "\"\"") || (!strcmp(value, "''"))) {
+ value[0]=0 ;
+ }
+ sta = LINE_VALUE ;
+ } else if (sscanf(line, "%[^=] = %[;#]", key, value)==2
+ || sscanf(line, "%[^=] %[=]", key, value) == 2) {
+ /*
+ * Special cases:
+ * key=
+ * key=;
+ * key=#
+ */
+ strcpy(key, strstrip(key));
+ strcpy(key, strlwc(key));
+ value[0]=0 ;
+ sta = LINE_VALUE ;
+ } else {
+ /* Generate syntax error */
+ sta = LINE_ERROR ;
+ }
+ return sta ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Parse an ini file and return an allocated dictionary object
+ @param ininame Name of the ini file to read.
+ @return Pointer to newly allocated dictionary
+
+ This is the parser for ini files. This function is called, providing
+ the name of the file to be read. It returns a dictionary object that
+ should not be accessed directly, but through accessor functions
+ instead.
+
+ The returned dictionary must be freed using iniparser_freedict().
+ */
+/*--------------------------------------------------------------------------*/
+dictionary * iniparser_load(const char * ininame)
+{
+ FILE * in ;
+
+ char line [ASCIILINESZ+1] ;
+ char section [ASCIILINESZ+1] ;
+ char key [ASCIILINESZ+1] ;
+ char tmp [ASCIILINESZ+1] ;
+ char val [ASCIILINESZ+1] ;
+
+ int last=0 ;
+ int len ;
+ int lineno=0 ;
+ int errs=0;
+
+ dictionary * dict ;
+
+ if ((in=fopen(ininame, "r"))==NULL) {
+ fprintf(stderr, "iniparser: cannot open %s\n", ininame);
+ return NULL ;
+ }
+
+ dict = dictionary_new(0) ;
+ if (!dict) {
+ fclose(in);
+ return NULL ;
+ }
+
+ memset(line, 0, ASCIILINESZ);
+ memset(section, 0, ASCIILINESZ);
+ memset(key, 0, ASCIILINESZ);
+ memset(val, 0, ASCIILINESZ);
+ last=0 ;
+
+ while (fgets(line+last, ASCIILINESZ-last, in)!=NULL) {
+ lineno++ ;
+ len = (int)strlen(line)-1;
+ if (len==0)
+ continue;
+ /* Safety check against buffer overflows */
+ if (line[len]!='\n') {
+ fprintf(stderr,
+ "iniparser: input line too long in %s (%d)\n",
+ ininame,
+ lineno);
+ dictionary_del(dict);
+ fclose(in);
+ return NULL ;
+ }
+ /* Get rid of \n and spaces at end of line */
+ while ((len>=0) &&
+ ((line[len]=='\n') || (isspace(line[len])))) {
+ line[len]=0 ;
+ len-- ;
+ }
+ /* Detect multi-line */
+ if (line[len]=='\\') {
+ /* Multi-line value */
+ last=len ;
+ continue ;
+ } else {
+ last=0 ;
+ }
+ switch (iniparser_line(line, section, key, val)) {
+ case LINE_EMPTY:
+ case LINE_COMMENT:
+ break ;
+
+ case LINE_SECTION:
+ errs = dictionary_set(dict, section, NULL);
+ break ;
+
+ case LINE_VALUE:
+ sprintf(tmp, "%s:%s", section, key);
+ errs = dictionary_set(dict, tmp, val) ;
+ break ;
+
+ case LINE_ERROR:
+ fprintf(stderr, "iniparser: syntax error in %s (%d):\n",
+ ininame,
+ lineno);
+ fprintf(stderr, "-> %s\n", line);
+ errs++ ;
+ break;
+
+ default:
+ break ;
+ }
+ memset(line, 0, ASCIILINESZ);
+ last=0;
+ if (errs<0) {
+ fprintf(stderr, "iniparser: memory allocation failure\n");
+ break ;
+ }
+ }
+ if (errs) {
+ dictionary_del(dict);
+ dict = NULL ;
+ }
+ fclose(in);
+ return dict ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Free all memory associated to an ini dictionary
+ @param d Dictionary to free
+ @return void
+
+ Free all memory associated to an ini dictionary.
+ It is mandatory to call this function before the dictionary object
+ gets out of the current context.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_freedict(dictionary * d)
+{
+ dictionary_del(d);
+}
+
+/* vim: set ts=4 et sw=4 tw=75 */