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-rw-r--r--ubi-utils/libiniparser.c646
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diff --git a/ubi-utils/libiniparser.c b/ubi-utils/libiniparser.c
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--- a/ubi-utils/libiniparser.c
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-
-/*-------------------------------------------------------------------------*/
-/**
- @file iniparser.c
- @author N. Devillard
- @date Sep 2007
- @version 3.0
- @brief Parser for ini files.
-*/
-/*--------------------------------------------------------------------------*/
-/*
- $Id: iniparser.c,v 2.18 2008-01-03 18:35:39 ndevilla Exp $
- $Revision: 2.18 $
- $Date: 2008-01-03 18:35:39 $
-*/
-/*---------------------------- Includes ------------------------------------*/
-#include <ctype.h>
-#include <libiniparser.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(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, j ;
- char keym[ASCIILINESZ+1];
- int nsec ;
- char * secname ;
- int seclen ;
-
- 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) ;
- seclen = (int)strlen(secname);
- fprintf(f, "\n[%s]\n", secname);
- sprintf(keym, "%s:", secname);
- 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 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, 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,
- 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, char * entry, 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, 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(
- 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]=='#') {
- /* 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;
- /* 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 */
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