Mercurial > hg > mlmmj
view src/gethdrline.c @ 887:3032cb926799 BRANCH_1_2_18
Added tag RELEASE_1_2_18_1 for changeset c1b22b049682
author | Ben Schmidt |
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date | Wed, 05 Feb 2014 17:14:22 +1100 |
parents | aefc70519e62 |
children | 1c13e314e5b9 |
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/* Copyright (C) 2004 Mads Martin Joergensen <mmj at mmj.dk> * Copyright (C) 2006 Morten K. Poulsen <morten at afdelingp.dk> * * $Id$ * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include <stdlib.h> #include <unistd.h> #include "mygetline.h" #include "gethdrline.h" #include "strgen.h" #include "memory.h" #include "wrappers.h" #include "log_error.h" char *gethdrline(int fd) { char *line = NULL, *retstr = NULL, *oldretstr = NULL; char ch; ssize_t n; retstr = mygetline(fd); if (!retstr) { return NULL; } /* do not attempt to unfold the end-of-headers marker */ if (retstr[0] == '\n') return retstr; for(;;) { /* look-ahead one char to determine if we need to unfold */ n = readn(fd, &ch, 1); if (n == 0) { /* end of file, and therefore also headers */ return retstr; } else if (n == -1) { /* error */ log_error(LOG_ARGS, "readn() failed in gethdrline()"); myfree(retstr); return NULL; } if (lseek(fd, -1, SEEK_CUR) == (off_t)-1) { log_error(LOG_ARGS, "lseek() failed in gethdrline()"); myfree(retstr); return NULL; } if ((ch != '\t') && (ch != ' ')) /* no more unfolding */ return retstr; oldretstr = retstr; line = mygetline(fd); if (!line) { return retstr; } retstr = concatstr(2, oldretstr, line); myfree(oldretstr); myfree(line); } }