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41 lines
1.7 KiB
C
41 lines
1.7 KiB
C
/*
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Serval string primitives
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Copyright (C) 2012 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __STR_H__
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#define __STR_H__
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/* Check if a given string starts with a given sub-string. If so, return 1 and, if afterp is not
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NULL, set *afterp to point to the character immediately following the substring. Otherwise
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return 0.
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This function is used to parse HTTP headers and responses, which are typically not
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nul-terminated, but are held in a buffer which has an associated length. To avoid this function
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running past the end of the buffer, the caller must ensure that the buffer contains a sub-string
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that is not part of the sub-string being sought, eg, "\r\n\r\n" as detected by
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http_header_complete(). This guarantees that this function will return nonzero before running
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past the end of the buffer.
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@author Andrew Bettison <andrew@servalproject.com>
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*/
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int str_startswith(char *str, const char *substring, char **afterp);
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/* Case-insensitive form of str_startswith().
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*/
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int strcase_startswith(char *str, const char *substring, char **afterp);
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#endif |