一個開源的跨平臺ini檔案解析器
阿新 • • 發佈:2019-01-07
ini檔案是window所用的初始化檔案,一些輕量級的配置檔案可以採用,非常好用,在其他系統中也可以應用到自己的專案中,這裡分享一個跨平臺的Ini檔案解析器。
iniparser.h
<span style="font-family: Arial, Helvetica, sans-serif;">/**</span>
@file iniparser.h @author N. Devillard @date Sep 2007 @version 3.0 @brief Parser for ini files. */ /*--------------------------------------------------------------------------*/ /* $Id: iniparser.h,v 1.26 2011-03-02 20:15:13 ndevilla Exp $ $Revision: 1.26 $ */ #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" /*-------------------------------------------------------------------------*/ /** @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 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 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, 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, 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, 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, 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, char * entry, 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, 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, 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(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); #endif
iniparser.c
/*-------------------------------------------------------------------------*/ /** @file iniparser.c @author N. Devillard @date Sep 2007 @version 3.0 @brief Parser for ini files. */ /*--------------------------------------------------------------------------*/ /* $Id: iniparser.c,v 2.19 2011-03-02 20:15:13 ndevilla Exp $ $Revision: 2.19 $ $Date: 2011-03-02 20:15:13 $ */ /*---------------------------- Includes ------------------------------------*/ #include <ctype.h> #include "iniparser.h" /*---------------------------- Defines -------------------------------------*/ #define ASCIILINESZ (2048) #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(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, 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, 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, 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]=='#' || 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(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 ; } // modified start by caji 2011/07/21 // remove UTF-8 BOM header char* line_new = line; if (lineno == 1) { unsigned char *temp = (unsigned char*)line; if (temp[0] == 0xEF && temp[1] == 0xBB && temp[2] == 0xBF) { line_new += 3; } } // switch (iniparser_line(line, section, key, val)) { switch (iniparser_line(line_new, section, key, val)) { // modified end by caji 2011/07/21 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 */
dictionary.c
/** @file dictionary.c @author N. Devillard @date Sep 2007 @version $Revision: 1.27 $ @brief Implements a dictionary for string variables. This module implements a simple dictionary object, i.e. a list of string/string associations. This object is useful to store e.g. informations retrieved from a configuration file (ini files). */ /*--------------------------------------------------------------------------*/ /* $Id: dictionary.c,v 1.27 2007-11-23 21:39:18 ndevilla Exp $ $Revision: 1.27 $ */ /*--------------------------------------------------------------------------- Includes ---------------------------------------------------------------------------*/ #include "dictionary.h" #include <stdio.h> #include <stdlib.h> #include <string.h> //#include <unistd.h> /** Maximum value size for integers and doubles. */ #define MAXVALSZ 1024 /** Minimal allocated number of entries in a dictionary */ #define DICTMINSZ 128 /** Invalid key token */ #define DICT_INVALID_KEY ((char*)-1) /*--------------------------------------------------------------------------- Private functions ---------------------------------------------------------------------------*/ /* Doubles the allocated size associated to a pointer */ /* 'size' is the current allocated size. */ static void * mem_double(void * ptr, int size) { void * newptr ; newptr = calloc(2*size, 1); if (newptr==NULL) { return NULL ; } memcpy(newptr, ptr, size); free(ptr); return newptr ; } /*-------------------------------------------------------------------------*/ /** @brief Duplicate a string @param s String to duplicate @return Pointer to a newly allocated string, to be freed with free() This is a replacement for strdup(). This implementation is provided for systems that do not have it. */ /*--------------------------------------------------------------------------*/ static char * xstrdup(char * s) { char * t ; if (!s) return NULL ; t = (char*)malloc(strlen(s)+1) ; if (t) { strcpy(t,s); } return t ; } /*--------------------------------------------------------------------------- Function codes ---------------------------------------------------------------------------*/ /*-------------------------------------------------------------------------*/ /** @brief Compute the hash key for a string. @param key Character string to use for key. @return 1 unsigned int on at least 32 bits. This hash function has been taken from an Article in Dr Dobbs Journal. This is normally a collision-free function, distributing keys evenly. The key is stored anyway in the struct so that collision can be avoided by comparing the key itself in last resort. */ /*--------------------------------------------------------------------------*/ unsigned dictionary_hash(char * key) { int len ; unsigned hash ; int i ; len = strlen(key); for (hash=0, i=0 ; i<len ; i++) { hash += (unsigned)key[i] ; hash += (hash<<10); hash ^= (hash>>6) ; } hash += (hash <<3); hash ^= (hash >>11); hash += (hash <<15); return hash ; } /*-------------------------------------------------------------------------*/ /** @brief Create a new dictionary object. @param size Optional initial size of the dictionary. @return 1 newly allocated dictionary objet. This function allocates a new dictionary object of given size and returns it. If you do not know in advance (roughly) the number of entries in the dictionary, give size=0. */ /*--------------------------------------------------------------------------*/ dictionary * dictionary_new(int size) { dictionary * d ; /* If no size was specified, allocate space for DICTMINSZ */ if (size<DICTMINSZ) size=DICTMINSZ ; if (!(d = (dictionary *)calloc(1, sizeof(dictionary)))) { return NULL; } d->size = size ; d->val = (char **)calloc(size, sizeof(char*)); d->key = (char **)calloc(size, sizeof(char*)); d->hash = (unsigned int *)calloc(size, sizeof(unsigned)); return d ; } /*-------------------------------------------------------------------------*/ /** @brief Delete a dictionary object @param d dictionary object to deallocate. @return void Deallocate a dictionary object and all memory associated to it. */ /*--------------------------------------------------------------------------*/ void dictionary_del(dictionary * d) { int i ; if (d==NULL) return ; for (i=0 ; i<d->size ; i++) { if (d->key[i]!=NULL) free(d->key[i]); if (d->val[i]!=NULL) free(d->val[i]); } free(d->val); free(d->key); free(d->hash); free(d); return ; } /*-------------------------------------------------------------------------*/ /** @brief Get a value from a dictionary. @param d dictionary object to search. @param key Key to look for in the dictionary. @param def Default value to return if key not found. @return 1 pointer to internally allocated character string. This function locates a key in a dictionary and returns a pointer to its value, or the passed 'def' pointer if no such key can be found in dictionary. The returned character pointer points to data internal to the dictionary object, you should not try to free it or modify it. */ /*--------------------------------------------------------------------------*/ char * dictionary_get(dictionary * d, char * key, char * def) { unsigned hash ; int i ; hash = dictionary_hash(key); for (i=0 ; i<d->size ; i++) { if (d->key[i]==NULL) continue ; /* Compare hash */ if (hash==d->hash[i]) { /* Compare string, to avoid hash collisions */ if (!strcmp(key, d->key[i])) { return d->val[i] ; } } } return def ; } /*-------------------------------------------------------------------------*/ /** @brief Set a value in a dictionary. @param d dictionary object to modify. @param key Key to modify or add. @param val Value to add. @return int 0 if Ok, anything else otherwise If the given key is found in the dictionary, the associated value is replaced by the provided one. If the key cannot be found in the dictionary, it is added to it. It is Ok to provide a NULL value for val, but NULL values for the dictionary or the key are considered as errors: the function will return immediately in such a case. Notice that if you dictionary_set a variable to NULL, a call to dictionary_get will return a NULL value: the variable will be found, and its value (NULL) is returned. In other words, setting the variable content to NULL is equivalent to deleting the variable from the dictionary. It is not possible (in this implementation) to have a key in the dictionary without value. This function returns non-zero in case of failure. */ /*--------------------------------------------------------------------------*/ int dictionary_set(dictionary * d, char * key, char * val) { int i ; unsigned hash ; if (d==NULL || key==NULL) return -1 ; /* Compute hash for this key */ hash = dictionary_hash(key) ; /* Find if value is already in dictionary */ if (d->n>0) { for (i=0 ; i<d->size ; i++) { if (d->key[i]==NULL) continue ; if (hash==d->hash[i]) { /* Same hash value */ if (!strcmp(key, d->key[i])) { /* Same key */ /* Found a value: modify and return */ if (d->val[i]!=NULL) free(d->val[i]); d->val[i] = val ? xstrdup(val) : NULL ; /* Value has been modified: return */ return 0 ; } } } } /* Add a new value */ /* See if dictionary needs to grow */ if (d->n==d->size) { /* Reached maximum size: reallocate dictionary */ d->val = (char **)mem_double(d->val, d->size * sizeof(char*)) ; d->key = (char **)mem_double(d->key, d->size * sizeof(char*)) ; d->hash = (unsigned int *)mem_double(d->hash, d->size * sizeof(unsigned)) ; if ((d->val==NULL) || (d->key==NULL) || (d->hash==NULL)) { /* Cannot grow dictionary */ return -1 ; } /* Double size */ d->size *= 2 ; } /* Insert key in the first empty slot */ for (i=0 ; i<d->size ; i++) { if (d->key[i]==NULL) { /* Add key here */ break ; } } /* Copy key */ d->key[i] = xstrdup(key); d->val[i] = val ? xstrdup(val) : NULL ; d->hash[i] = hash; d->n ++ ; return 0 ; } /*-------------------------------------------------------------------------*/ /** @brief Delete a key in a dictionary @param d dictionary object to modify. @param key Key to remove. @return void This function deletes a key in a dictionary. Nothing is done if the key cannot be found. */ /*--------------------------------------------------------------------------*/ void dictionary_unset(dictionary * d, char * key) { unsigned hash ; int i ; if (key == NULL) { return; } hash = dictionary_hash(key); for (i=0 ; i<d->size ; i++) { if (d->key[i]==NULL) continue ; /* Compare hash */ if (hash==d->hash[i]) { /* Compare string, to avoid hash collisions */ if (!strcmp(key, d->key[i])) { /* Found key */ break ; } } } if (i>=d->size) /* Key not found */ return ; free(d->key[i]); d->key[i] = NULL ; if (d->val[i]!=NULL) { free(d->val[i]); d->val[i] = NULL ; } d->hash[i] = 0 ; d->n -- ; return ; } /*-------------------------------------------------------------------------*/ /** @brief Dump a dictionary to an opened file pointer. @param d Dictionary to dump @param f Opened file pointer. @return void Dumps a dictionary onto an opened file pointer. Key pairs are printed out as @c [Key]=[Value], one per line. It is Ok to provide stdout or stderr as output file pointers. */ /*--------------------------------------------------------------------------*/ void dictionary_dump(dictionary * d, FILE * out) { int i ; if (d==NULL || out==NULL) return ; if (d->n<1) { fprintf(out, "empty dictionary\n"); return ; } for (i=0 ; i<d->size ; i++) { if (d->key[i]) { fprintf(out, "%20s\t[%s]\n", d->key[i], d->val[i] ? d->val[i] : "UNDEF"); } } return ; }
/* Test code */
#ifdef TESTDIC
#define NVALS 20000
int main(int argc, char *argv[])
{
dictionary * d ;
char * val ;
int i ;
char cval[90] ;
/* Allocate dictionary */
printf("allocating...\n");
d = dictionary_new(0);
/* Set values in dictionary */
printf("setting %d values...\n", NVALS);
for (i=0 ; i<NVALS ; i++) {
sprintf(cval, "%04d", i);
dictionary_set(d, cval, "salut");
}
printf("getting %d values...\n", NVALS);
for (i=0 ; i<NVALS ; i++) {
sprintf(cval, "%04d", i);
val = dictionary_get(d, cval, DICT_INVALID_KEY);
if (val==DICT_INVALID_KEY) {
printf("cannot get value for key [%s]\n", cval);
}
}
printf("unsetting %d values...\n", NVALS);
for (i=0 ; i<NVALS ; i++) {
sprintf(cval, "%04d", i);
dictionary_unset(d, cval);
}
if (d->n != 0) {
printf("error deleting values\n");
}
printf("deallocating...\n");
dictionary_del(d);
return 0 ;
}
#endif
/* vim: set ts=4 et sw=4 tw=75 */
main.cpp
#include "iniparser.h"
#include <stdio.h>
#define INIFILENAME ("Encoder.ini")
#define MAX_ECC_LEN (256)
//私鑰結構體
typedef struct _Ecc_p
{
char p[MAX_ECC_LEN]; //有限域p
char a[MAX_ECC_LEN];
char k[MAX_ECC_LEN]; //私密
_Ecc_p()
{
memset(p, 0, MAX_ECC_LEN);
memset(a, 0, MAX_ECC_LEN);
memset(k, 0, MAX_ECC_LEN);
}
}Ecc_p;
int main()
{
//注意ini檔案必須/r/n結束 否則載入失敗
dictionary* ini;
ini = iniparser_load((char*)INIFILENAME);
if (ini == NULL)
{
printf("載入私用金鑰配置檔案[%s]失敗\n",INIFILENAME);
return 0;
}
//載入私用金鑰
Ecc_p PrivateEcc;
//
strcpy(PrivateEcc.p, iniparser_getstring(ini,(char*) "PrivateKey:key_p", (char*) "11111"));
strcpy(PrivateEcc.a, iniparser_getstring(ini,(char*) "PrivateKey:key_a", (char*) "11111"));
strcpy(PrivateEcc.k, iniparser_getstring(ini,(char*) "PrivateKey:key_k", (char*) "11111"));
printf("key_p:%s\n",PrivateEcc.p);
printf("key_a:%s\n",PrivateEcc.a);
printf("key_k:%s\n",PrivateEcc.k);
system("PAUSE");
return 0;
}
編譯環境:Win7_64bit+VS2008
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