[C++]C语言利用开源的iniparse库解析INI文件
ini 文件是Initialization File的缩写，即初始化文件，这是用来配置应用软件以实现不同用户的要求。
·
一、了解什么是INI文件？
ini 文件是Initialization File的缩写，即初始化文件，这是用来配置应用软件以实现不同用户的要求。
二、INI文件的格式
INI文件由节、键、值组成。
一个简单的的INI文件例子如下:
[Setting]
INIT_FLAG=0;
VOLUME=1;
LANGUAGE=1;
如上例子，[Setting]就是节，=号左边的值是键，=号右边的是值。
三、使用开源的iniparse库解析上述文件
iniparse.h
/*-------------------------------------------------------------------------*/
/**
@file iniparser.h
@author N. Devillard
@brief Parser for ini files.
*/
/*--------------------------------------------------------------------------*/
#ifndef INIPARSER_H
#define INIPARSER_H
/*---------------------------------------------------------------------------
Includes
---------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*
* The following #include is necessary on many Unixes but not Linux.
* It is not needed for Windows platforms.
* Uncomment it if needed.
*/
/* #include <unistd.h> */
#include "dictionary.h"
#ifdef __cplusplus
extern "C" {
#endif
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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) ;
/*-------------------------------------------------------------------------*/
/**
@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);
/*-------------------------------------------------------------------------*/
/**
@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);
#ifdef __cplusplus
}
#endif
#endif
iniparse.c
/*-------------------------------------------------------------------------*/
/**
@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.
This function modifies the string passed, the modified string
contains a lowercased version of the input string.
*/
/*--------------------------------------------------------------------------*/
static void strlwc(char * s)
{
int i ;
if (s==NULL) return;
i=0 ;
while (s[i]) {
s[i] = (char)tolower((int)s[i]);
i++ ;
}
}
/*-------------------------------------------------------------------------*/
/**
@brief Remove blanks at the beginning and the end of a string.
@param s String to parse.
This function modifies the input string and returns a modified 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.
*/
/*--------------------------------------------------------------------------*/
static void strstrip(char * s)
{
if (s==NULL) return ;
char *last = s + strlen(s);
char *dest = s;
while (isspace((int)*s) && *s) s++;
while (last > s) {
if (!isspace((int)*(last-1)))
break ;
last -- ;
}
*last = (char)0;
memmove(dest, s, last - s + 1);
}
/*-------------------------------------------------------------------------*/
/**
@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;
int secsize ;
if (d==NULL || f==NULL) return ;
if (! iniparser_find_entry(d, s)) return ;
fprintf(f, "\n[%s]\n", s);
secsize = (int)strlen(s) + 2;
keym = (char *)malloc(secsize);
snprintf(keym, secsize, "%s:", s);
for (j=0 ; j<d->size ; j++) {
if (d->key[j]==NULL)
continue ;
if (!strncmp(d->key[j], keym, secsize-1)) {
fprintf(f,
"%-30s = %s\n",
d->key[j]+secsize-1,
d->val[j] ? d->val[j] : "");
}
}
fprintf(f, "\n");
free(keym);
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 secsize, nkeys ;
char *keym;
int j ;
nkeys = 0;
if (d==NULL) return nkeys;
if (! iniparser_find_entry(d, s)) return nkeys;
secsize = (int)strlen(s)+2;
keym = (char *)malloc(secsize);
snprintf(keym, secsize, "%s:", s);
for (j=0 ; j<d->size ; j++) {
if (d->key[j]==NULL)
continue ;
if (!strncmp(d->key[j], keym, secsize-1))
nkeys++;
}
free(keym);
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;
int secsize, 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*));
secsize = (int)strlen(s) + 2;
keym = (char *)malloc(secsize);
snprintf(keym, secsize, "%s:", s);
i = 0;
for (j=0 ; j<d->size ; j++) {
if (d->key[j]==NULL)
continue ;
if (!strncmp(d->key[j], keym, secsize-1)) {
keys[i] = d->key[j];
i++;
}
}
free(keym);
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 = xstrdup(key);
strlwc(lc_key);
sval = dictionary_get(d, lc_key, def);
free(lc_key);
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)
{
int result = 0;
char *lc_entry = xstrdup(entry);
strlwc(lc_entry);
result = dictionary_set(ini, lc_entry, val) ;
free(lc_entry);
return result;
}
/*-------------------------------------------------------------------------*/
/**
@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)
{
char* lc_entry = xstrdup(entry);
strlwc(lc_entry);
dictionary_unset(ini, lc_entry);
free(lc_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(
int line_size,
const char * input_line,
char ** section_out,
char ** key_out,
char ** value_out)
{
line_status sta ;
int len = line_size-1;
char * line = (char *)malloc(line_size);
char * key = NULL;
char * value = NULL;
char * equals = NULL;
if (!line) {
fprintf(stderr, "iniparser: memory alloc error\n");
return LINE_ERROR;
}
*line = 0;
strcpy(line, input_line);
strstrip(line);
len = (int)strlen(line);
/* only allocate necessary space for key & val */
equals = strchr(line, '=');
if (equals) {
value = (char *)malloc((len + line) - equals + 1);
key = (char *)malloc(equals - line + 1);
*value = 0;
} else {
key = (char *)malloc(line_size + 1);
}
if (!key || (equals && !value)) {
fprintf(stderr, "iniparser: memory alloc error\n");
sta = LINE_ERROR;
goto out;
}
*key = 0;
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, "[%[^]]", key);
strstrip(key);
strlwc(key);
sta = LINE_SECTION ;
*section_out=key;
/* don't free key's memory */
key = NULL;
} else if (equals && (sscanf (line, "%[^=] = \"%[^\"]\"", key, value) == 2
|| sscanf (line, "%[^=] = '%[^\']'", key, value) == 2
|| sscanf (line, "%[^=] = %[^;#]", key, value) == 2)) {
/* Usual key=value, with or without comments */
strstrip(key);
strlwc(key);
strstrip(value);
/*
* sscanf cannot handle '' or "" as empty values
* this is done here
*/
if (!strcmp(value, "\"\"") || (!strcmp(value, "''"))) {
value[0]=0 ;
}
*key_out = key;
*value_out = value;
key = NULL;
value = NULL;
sta = LINE_VALUE ;
} else if (equals && (sscanf(line, "%[^=] = %[;#]", key, value)==2
|| sscanf(line, "%[^=] %[=]", key, value) == 2)) {
/*
* Special cases:
* key=
* key=;
* key=#
*/
strstrip(key);
strlwc(key);
value[0]=0 ;
*key_out = key;
*value_out = value;
/* don't free out params key or val's memory */
key = NULL;
value = NULL;
sta = LINE_VALUE ;
} else {
/* Generate syntax error */
sta = LINE_ERROR ;
}
out:
if (line) {
free(line);
line = NULL;
}
if (key) {
free(key);
key = NULL;
}
if (value) {
free(value);
value= NULL;
}
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 = NULL ;
char line [ASCIILINESZ+1] ;
char *section = xstrdup("");
char *current_section = NULL;
char *key = NULL;
char *val = NULL;
char* full_line = NULL;
char* prev_line = NULL;
int len ;
int lineno=0 ;
int errs=0;
int seckey_size=0;
dictionary * dict = NULL ;
if ((in=fopen(ininame, "r"))==NULL) {
fprintf(stderr, "iniparser: cannot open %s\n", ininame);
goto out;
}
dict = dictionary_new(0) ;
if (!dict) {
goto out;
}
memset(line, 0, ASCIILINESZ);
while (fgets(line, ASCIILINESZ, in)!=NULL) {
int prev_line_len = 0;
int multi_line = 0;
int total_size = 0;
if (key) {
free(key);
key = NULL;
}
if (val) {
free(val);
val = NULL;
}
lineno++ ;
len = (int)strlen(line)-1;
if (len==0)
continue;
/* Safety check against buffer overflows */
if (line[len]!='\n' && !feof(in)) {
fprintf(stderr,
"iniparser: input line too long in %s (%d)\n",
ininame,
lineno);
errs++;
goto out;
}
/* Get rid of \n and spaces at end of line */
while ((len>=0) &&
((line[len]=='\n') || (isspace(line[len])))) {
line[len]=0 ;
len-- ;
}
if (len < 0) { /* Line was entirely \n and/or spaces */
len = 0;
}
/* Detect multi-line */
if (line[len]=='\\') {
multi_line = 1;
}
if (multi_line) {
/* Multi-line value */
/* length without trailing '\' */
/* remove multi-line indicator before appending*/
line[len] = 0;
len--;
}
/*
* If processing a multi-line then append it the previous portion,
* at this point 'full_line' has the previously read portion of a
* multi-line line (or NULL)
*/
prev_line = full_line;
prev_line_len=0;
if (prev_line) {
prev_line_len = strlen(prev_line);
}
/* len is not strlen(line) but strlen(line) -1 */
total_size = (len+1) + prev_line_len + 1;
full_line = (char *)malloc(total_size);
if (!full_line) {
fprintf(stderr,
"iniparser: out of mem\n");
errs++;
goto out;
}
memset(full_line, 0, total_size);
if (prev_line) {
strcpy(full_line, prev_line);
}
strcpy(full_line + prev_line_len, line);
free(prev_line);
prev_line = NULL;
if (multi_line) {
continue ;
}
switch (iniparser_line(total_size, full_line, ¤t_section, &key, &val)) {
case LINE_EMPTY:
case LINE_COMMENT:
break ;
case LINE_SECTION:
if (section) {
free(section);
section=NULL;
}
errs = dictionary_set(dict, current_section, NULL);
section = current_section;
break ;
case LINE_VALUE:
{
char *seckey;
/* section + ':' + key + eos */
seckey_size = strlen(section) + strlen(key) +2;
seckey = (char *)malloc(seckey_size);
if (!seckey) {
errs++;
fprintf(stderr,
"iniparser: out of mem\n");
goto out;
}
snprintf(seckey, seckey_size, "%s:%s", section, key);
errs = dictionary_set(dict, seckey, val) ;
free(seckey);
seckey = NULL;
}
break ;
case LINE_ERROR:
fprintf(stderr, "iniparser: syntax error in %s (%d):\n",
ininame,
lineno);
fprintf(stderr, "-> %s\n", full_line);
errs++ ;
break;
default:
break ;
}
memset(line, 0, ASCIILINESZ);
if (full_line) {
free(full_line);
full_line = NULL;
}
if (errs<0) {
fprintf(stderr, "iniparser: memory allocation failure\n");
break ;
}
}
out:
if (errs) {
dictionary_del(dict);
dict = NULL ;
}
if (val) {
free(val);
val = NULL;
}
if (key) {
free(key);
key = NULL;
}
if (section) {
free(section);
section = NULL;
}
if (full_line) {
free(full_line);
full_line = NULL;
}
if (prev_line) {
free(prev_line);
prev_line = NULL;
}
if (in) {
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 */四、尝试解析上述的Config.ini文件
#include <stdio.h>
#include "iniparser.h"
#define CONFIG_NAME "Config.ini"
void Create_Default_InI_File(void)
{
FILE *Default_ini = NULL ;
Default_ini = fopen(CONFIG_NAME,"w");
fprintf(Default_ini,
"[Setting]\n"
"INIT_FLAG=0;\n"
"VOLUME=1;\n"
"LANGUAGE=1;\n"
);
fclose(Default_ini);
}
int main(void)
{
int Init_flag ;
int Volume_flag ;
int English_flag ;
/*1、创建一个默认的Config.ini文件*/
Create_Default_InI_File();
/*2、解析Config.ini文件获得参数*/
dictionary *Config_ini = NULL;
Config_ini = iniparser_load(CONFIG_NAME);
if(NULL == Config_ini)
{
printf("cannot parse %s file\n",CONFIG_NAME);
return -1 ;
}
iniparser_dump(Config_ini,stderr);
Init_flag = iniparser_getint(Config_ini,"Setting:INIT_FLAG",-1);
Volume_flag = iniparser_getint(Config_ini,"Setting:VOLUME",-1);
English_flag = iniparser_getint(Config_ini,"Setting:LANGUAGE",-1);
printf("Init_flag:%d\n",Init_flag);
printf("Volume_flag:%d\n",Volume_flag);
printf("English_flag:%d\n",English_flag);
iniparser_set(Config_ini,"Setting:INIT_FLAG","1");
Init_flag = iniparser_getint(Config_ini,"Setting:INIT_FLAG",-1);
Volume_flag = iniparser_getint(Config_ini,"Setting:VOLUME",-1);
English_flag = iniparser_getint(Config_ini,"Setting:LANGUAGE",-1);
printf("Init_flag:%d\n",Init_flag);
printf("Volume_flag:%d\n",Volume_flag);
printf("English_flag:%d\n",English_flag);
iniparser_freedict(Config_ini);
return 0;
}运行结果:
注意，如果要将iniparse库移植到单片机上时，要注意堆栈大小，因为在加载ini文件的时候，默认大小是1024个字节，如果单片机上的栈没有那么大的时候，我们要根据ini配置文件的大小去调节这个大小。
有“AI”的1024 = 2048，欢迎大家加入2048 AI社区
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