Simple library of INI file parser.
Dependents: TrainInfoSample WatchSensorMail
IniFile.cpp
- Committer:
- rinosh2
- Date:
- 2010-11-17
- Revision:
- 1:3601c7feb547
- Parent:
- 0:995403221573
- Child:
- 2:4ae80a05f6ea
File content as of revision 1:3601c7feb547:
/////////////////////////////////////////////////////////////////////////////// // IniFile: .ini file parser by rinos 2010 /////////////////////////////////////////////////////////////////////////////// #include "IniFile.h" #include <string.h> #include <stdlib.h> //////////////////////////////////////////////////////////////////////////////// // defines const char INI_DELIM[] = " \t\r\n"; const int INI_LINE_BUF= 256; //////////////////////////////////////////////////////////////////////////////// // IniFile IniFile::IniFile(const char* file): m_fp(0) { if(file) open(file); } IniFile::~IniFile(){ close(); } //////////////////////////////////////////////////////////////////////////////// // internal funcs IniFile::Status IniFile::strtrim(char* dst, const char* src, int dst_size){ if(!dst_size) return S_BUFFER_TOO_SHORT; // myStrcpy needs more than 1 byte for '\0'. // Find valid string area const char* p1 = strchr (src, '"'); const char* p2 = p1? strrchr(++p1, '"') : 0; if(!p2){ // trim space or tab for(p1 = src ; *p1 && strchr(INI_DELIM, *p1) ; p1++); if(!*p1){ // all char is space or tab *dst = 0; return S_SUCCESS; } for(p2 = p1 + strlen(p1) ; strchr(INI_DELIM, p2[-1]) ; --p2); } // Check copy size Status ret; if(dst_size > p2 - p1){ dst_size = p2 - p1; ret = S_SUCCESS; } else { dst_size--; ret = S_BUFFER_TOO_SHORT; } // copy buffer if(dst != p1) memmove(dst, p1, dst_size); dst[dst_size] = 0; return ret; } //////////////////////////////////////////////////////////////////////////////// // Access methods IniFile::Status IniFile::open(const char* file){ close(); m_fp = fopen(file, "r"); if(m_fp) return S_SUCCESS; //printf("IniFile: Can't open %s\n", file); return S_OPEN_ERROR; } IniFile::Status IniFile::close(){ if(!m_fp) return S_NOT_OPENED; fclose(m_fp); m_fp = 0; return S_SUCCESS; } IniFile::Status IniFile::get(const char* key, char* ret, int ret_size){ if(!m_fp) return S_OPEN_ERROR; rewind(m_fp); char line[INI_LINE_BUF]; while(fgets(line, sizeof(line), m_fp)){ if(*line == '#') continue; // comment line char* p = strchr(line, '='); if(!p || line == p) continue; // invalid line *p++ = 0; strtrim(line, line, p - line); if(strcmp(line, key)) continue; // different key // check data type switch(ret_size){ case DTYPE_INT: strtrim(line, p, INI_LINE_BUF); *(int*)ret = strtoul(line, &p, 0); //return p[0]? S_FORMAT_ERROR : S_SUCCESS; // check end return S_SUCCESS; // always success case DTYPE_BOOL: strtrim(line, p, INI_LINE_BUF); switch(line[0]){ case 'T': case 't': *(bool*)ret = true; break; case 'F': case 'f': *(bool*)ret = false; break; default: *(bool*)ret = strtoul(line, &p, 0)? true : false; } return S_SUCCESS; default: // string return strtrim(ret, p, ret_size); } } return S_NO_KEY; // No key } IniFile::Status IniFile::get(const char* key, int& ret){ return get(key, (char*)&ret, DTYPE_INT); } IniFile::Status IniFile::get(const char* key, bool& ret){ return get(key, (char*)&ret, DTYPE_BOOL); } IniFile::Status IniFile::get(const IniFile::IniList* inilist){ Status ret = S_SUCCESS; for(; inilist->key ; ++inilist){ Status sts = get(inilist->key, (char*)inilist->buf, inilist->typelen); switch(sts){ case S_SUCCESS: break; case S_NO_KEY: ret = sts; // continue break; default: return sts; // fatal error } } return ret; }