Annotation of libelwix/src/av.c, revision 1.1
1.1 ! misho 1: /*************************************************************************
! 2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
! 3: * by Michael Pounov <misho@elwix.org>
! 4: *
! 5: * $Author: misho $
! 6: * $Id: tools.c,v 1.20 2012/12/19 11:03:04 misho Exp $
! 7: *
! 8: **************************************************************************
! 9: The ELWIX and AITNET software is distributed under the following
! 10: terms:
! 11:
! 12: All of the documentation and software included in the ELWIX and AITNET
! 13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
! 14:
! 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
! 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
! 17:
! 18: Redistribution and use in source and binary forms, with or without
! 19: modification, are permitted provided that the following conditions
! 20: are met:
! 21: 1. Redistributions of source code must retain the above copyright
! 22: notice, this list of conditions and the following disclaimer.
! 23: 2. Redistributions in binary form must reproduce the above copyright
! 24: notice, this list of conditions and the following disclaimer in the
! 25: documentation and/or other materials provided with the distribution.
! 26: 3. All advertising materials mentioning features or use of this software
! 27: must display the following acknowledgement:
! 28: This product includes software developed by Michael Pounov <misho@elwix.org>
! 29: ELWIX - Embedded LightWeight unIX and its contributors.
! 30: 4. Neither the name of AITNET nor the names of its contributors
! 31: may be used to endorse or promote products derived from this software
! 32: without specific prior written permission.
! 33:
! 34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
! 35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 44: SUCH DAMAGE.
! 45: */
! 46: #include "global.h"
! 47:
! 48:
! 49: /*
! 50: * av_Make() Parse and make attribute/value pair
! 51: *
! 52: * @csArgs = Input argument line
! 53: * @csDelim = Delimiter for separate
! 54: * @psAttr = Output Attribute
! 55: * @attrLen = Size of attribute array
! 56: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
! 57: * @valLen = Size of value array
! 58: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
! 59: */
! 60: int
! 61: av_Make(const char * __restrict csArgs, const char *csDelim,
! 62: char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen)
! 63: {
! 64: register int ret = 0;
! 65: char *pos, *psBuf;
! 66:
! 67: if (!csArgs || !csDelim || !psAttr || !attrLen)
! 68: return -1;
! 69: if (psValue && !valLen)
! 70: return -1;
! 71: else
! 72: memset(psValue, 0, valLen);
! 73: psBuf = e_strdup(csArgs);
! 74: if (!psBuf)
! 75: return -1;
! 76:
! 77: pos = strpbrk(psBuf, csDelim);
! 78: if (pos)
! 79: *pos++ = 0;
! 80: ret++;
! 81: strlcpy(psAttr, psBuf, attrLen);
! 82:
! 83: if (pos && *pos) {
! 84: ret++;
! 85: if (psValue)
! 86: strlcpy(psValue, pos, valLen);
! 87: }
! 88:
! 89: e_free(psBuf);
! 90: return ret;
! 91: }
! 92:
! 93: /*
! 94: * av_MakeExt() Parse and make attribute/value pair over input string
! 95: *
! 96: * @csArgs = Input argument line, will be modified!
! 97: * @csDelim = Delimiter for separate
! 98: * @psAttr = Output Attribute
! 99: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
! 100: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
! 101: */
! 102: int
! 103: av_MakeExt(char * __restrict psArgs, const char *csDelim,
! 104: char ** __restrict psAttr, char ** __restrict psValue)
! 105: {
! 106: register int ret = 0;
! 107: char *pos;
! 108:
! 109: if (!psArgs || !csDelim)
! 110: return -1;
! 111:
! 112: pos = strpbrk(psArgs, csDelim);
! 113: if (pos) {
! 114: *pos++ = 0;
! 115: ret++;
! 116: if (psAttr)
! 117: *psAttr = psArgs;
! 118: } else
! 119: return 0;
! 120:
! 121: if (psValue) {
! 122: if (pos && *pos) {
! 123: ret++;
! 124: *psValue = pos;
! 125: } else
! 126: *psValue = NULL;
! 127: }
! 128:
! 129: return ret;
! 130: }
! 131:
! 132: /*
! 133: * av_Path2File() - Parse and make path/filename pair
! 134: *
! 135: * @csArgs = Input argument line
! 136: * @psPath = Output Path, if ==NULL path not returned
! 137: * @pathLen = Size of path array
! 138: * @psFile = Output File
! 139: * @fileLen = Size of file array
! 140: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
! 141: */
! 142: int
! 143: av_Path2File(const char * __restrict csArgs, char * __restrict psPath,
! 144: int pathLen, char * __restrict psFile, int fileLen)
! 145: {
! 146: char *pos, *psBuf;
! 147:
! 148: if (!csArgs || !psFile || !fileLen)
! 149: return -1;
! 150: if (psPath && !pathLen)
! 151: return -1;
! 152:
! 153: psBuf = e_strdup(csArgs);
! 154: if (!psBuf)
! 155: return -1;
! 156:
! 157: pos = strrchr(psBuf, '/');
! 158: if (!pos) {
! 159: strlcpy(psFile, psBuf, fileLen);
! 160:
! 161: e_free(psBuf);
! 162: return 1;
! 163: } else
! 164: *pos++ = 0;
! 165:
! 166: strlcpy(psFile, pos, fileLen);
! 167: if (psPath)
! 168: strlcpy(psPath, psBuf, pathLen);
! 169:
! 170: e_free(psBuf);
! 171: return 2;
! 172: }
! 173:
! 174:
! 175: /*
! 176: * av_Save() - Attribute/Value pair store to file
! 177: *
! 178: * @csPath = Directory
! 179: * @csAttr = Attribute
! 180: * @csVal = Value
! 181: * @update = Update if a/v exists
! 182: * @perm = File permissions, if =0 set default perm=0600
! 183: * return: -1 error or >-1 written bytes
! 184: */
! 185: int
! 186: av_Save(const char *csPath, const char *csAttr, const char *csVal, int update, int perm)
! 187: {
! 188: int fd, wlen = 0;
! 189: char szFile[MAXPATHLEN];
! 190:
! 191: if (!csAttr)
! 192: return -1;
! 193: else
! 194: memset(szFile, 0, sizeof szFile);
! 195: snprintf(szFile, sizeof szFile, "%s/%s.av", csPath ? csPath : ".", csAttr);
! 196:
! 197: wlen = O_CREAT | O_WRONLY;
! 198: if (!update)
! 199: wlen |= O_EXCL;
! 200: fd = open(szFile, wlen, perm ? perm : 0600);
! 201: if (fd == -1) {
! 202: LOGERR;
! 203: return -1;
! 204: } else
! 205: wlen ^= wlen;
! 206:
! 207: if (csVal)
! 208: if ((wlen = write(fd, csVal, strlen(csVal))) == -1) {
! 209: LOGERR;
! 210: close(fd);
! 211: unlink(szFile);
! 212: return -1;
! 213: }
! 214:
! 215: close(fd);
! 216: return wlen;
! 217: }
! 218:
! 219: /*
! 220: * av_Load() - Get stored Attribute/Value
! 221: *
! 222: * @csPath = Directory
! 223: * @csAttr = Attribute
! 224: * @psVal = Value
! 225: * @valLen = Value length
! 226: * @del = Delete a/v pair after read
! 227: * return: -1 error or >-1 readed bytes
! 228: */
! 229: int
! 230: av_Load(const char *csPath, const char *csAttr, char *psVal, int valLen, int del)
! 231: {
! 232: int fd, rlen = 0;
! 233: char szFile[MAXPATHLEN];
! 234:
! 235: if (!csAttr)
! 236: return -1;
! 237: else
! 238: memset(szFile, 0, sizeof szFile);
! 239: snprintf(szFile, sizeof szFile, "%s/%s.av", csPath ? csPath : ".", csAttr);
! 240:
! 241: if (psVal && valLen) {
! 242: fd = open(szFile, O_RDONLY);
! 243: if (fd == -1) {
! 244: LOGERR;
! 245: return -1;
! 246: } else
! 247: rlen ^= rlen;
! 248:
! 249: memset(psVal, 0, valLen);
! 250: rlen = read(fd, psVal, valLen - 1);
! 251: if (rlen == -1) {
! 252: LOGERR;
! 253: close(fd);
! 254: return -1;
! 255: }
! 256:
! 257: close(fd);
! 258: }
! 259:
! 260: if (del)
! 261: unlink(szFile);
! 262: return rlen;
! 263: }
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