2000-09-28 03:16:29 +00:00
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/* strutil.h
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* String utility definitions
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2000-09-11 16:16:13 +00:00
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2000-09-11 16:16:13 +00:00
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*
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2006-05-21 05:12:17 +00:00
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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2000-09-11 16:16:13 +00:00
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* Copyright 1998 Gerald Combs
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2002-08-28 20:41:00 +00:00
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*
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2000-09-11 16:16:13 +00:00
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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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2002-08-28 20:41:00 +00:00
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*
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2000-09-11 16:16:13 +00:00
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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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2002-08-28 20:41:00 +00:00
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*
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2000-09-11 16:16:13 +00:00
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __STRUTIL_H__
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#define __STRUTIL_H__
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2000-09-11 20:05:13 +00:00
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/* ... thus, config.h needs to be #included */
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2000-09-11 23:31:05 +00:00
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2004-06-06 14:29:07 +00:00
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/** @file
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* String handling and conversion utilities.
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*/
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/** Given a pointer into a data buffer, and to the end of the buffer,
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* find the end of the (putative) line at that position in the data
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* buffer.
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*
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* @param data A pointer to the beginning of the data
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* @param dataend A pointer to the end of the data
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* @param eol A pointer that will receive the EOL location
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* @return A pointer to the EOL character(s) in "*eol".
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*/
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2002-08-02 21:29:45 +00:00
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const guchar *find_line_end(const guchar *data, const guchar *dataend,
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const guchar **eol);
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2004-06-06 14:29:07 +00:00
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/** Get the length of the next token in a line, and the beginning of the
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* next token after that (if any).
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* @param linep A pointer to the beginning of the line
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* @param lineend A pointer to the end of the line
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* @param next_token Receives the location of the next token
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* @return 0 if there is no next token.
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*/
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2002-08-02 21:29:45 +00:00
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int get_token_len(const guchar *linep, const guchar *lineend,
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const guchar **next_token);
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2004-06-06 14:29:07 +00:00
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/** Given a string, generate a string from it that shows non-printable
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* characters as C-style escapes, and return a pointer to it.
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*
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* @param line A pointer to the input string
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* @param len The length of the input string
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* @return A pointer to the formatted string
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*
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* @see tvb_format_text()
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*/
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2009-03-30 03:40:12 +00:00
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gchar* format_text(const guchar *line, size_t len);
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2004-06-06 14:29:07 +00:00
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2009-03-30 03:40:12 +00:00
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gchar* format_text_wsp(const guchar *line, size_t len);
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2006-06-19 15:53:03 +00:00
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2004-06-06 14:29:07 +00:00
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/** Turn an array of bytes into a string showing the bytes in hex.
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*
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* @param bd A pointer to the byte array
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* @param bd_len The length of the byte array
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* @return A pointer to the formatted string
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*
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* @see bytes_to_str_punct()
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*/
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gchar* bytes_to_str(const guint8 *bd, int bd_len);
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/** Turn an array of bytes into a string showing the bytes in hex,
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* separated by a punctuation character.
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*
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* @param bd A pointer to the byte array
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* @param bd_len The length of the byte array
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* @param punct The punctuation character
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* @return A pointer to the formatted string
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*
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* @see bytes_to_str()
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*/
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gchar* bytes_to_str_punct(const guint8 *bd, int bd_len, gchar punct);
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/** Turn a string of hex digits with optional separators (defined by
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* is_byte_sep() into a byte array.
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*
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* @param hex_str The string of hex digits.
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* @param bytes The GByteArray that will receive the bytes. This
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* must be initialized by the caller.
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2006-09-22 21:14:54 +00:00
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* @param force_separators If set to TRUE, separators MUST exist between
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2004-06-06 14:29:07 +00:00
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* bytes.
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* @return True if the string was converted successfully
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*/
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gboolean hex_str_to_bytes(const char *hex_str, GByteArray *bytes,
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gboolean force_separators);
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2007-01-11 02:42:34 +00:00
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/** Turn an RFC 3986 percent-encoded string into a byte array.
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*
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* @param uri_str The string of hex digits.
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* @param bytes The GByteArray that will receive the bytes. This
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* must be initialized by the caller.
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* @return True if the string was converted successfully
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2007-01-11 22:12:33 +00:00
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* @see format_uri()
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2007-01-11 02:42:34 +00:00
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*/
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gboolean uri_str_to_bytes(const char *uri_str, GByteArray *bytes);
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2007-01-11 22:12:33 +00:00
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/** Turn a byte array into an RFC 3986 percent-encoded string.
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*
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* @param bytes The GByteArray that will receive the bytes. This
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* must be initialized by the caller.
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* @param reserved_chars Normally the "gen-delims" and "sub-delims"
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* from RFC 3986 (":/?#[]@" and "!$&'()*+,;=" respectively)
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* plus space (hex value 20) are treated as reserved characters.
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* If this variable is non-NULL, its contents will be used
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* instead.
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* @note Any non-printing character determined by isprint(), along
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* with the % character itself are always reserved.
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* @see uri_str_to_bytes(), format_text(), isprint()
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*/
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gchar* format_uri(const GByteArray *bytes, const gchar *reserved_chars);
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/** Turn a OID string representation (dot notation) into a byte array.
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2005-12-02 13:16:58 +00:00
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*
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* @param oid_str The OID string (dot notaion).
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* @param bytes The GByteArray that will receive the bytes. This
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* must be initialized by the caller.
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* @return True if the string was converted successfully
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*/
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gboolean oid_str_to_bytes(const char *oid_str, GByteArray *bytes);
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2007-01-11 02:42:34 +00:00
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/**
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* Create a copy of a GByteArray
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*
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* @param ba The byte array to be copied.
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* @return If ba exists, a freshly allocated copy. NULL otherwise.
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*
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* XXX - Should this be in strutil.c?
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*/
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GByteArray *byte_array_dup(GByteArray *ba);
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/**
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* Compare the contents of two GByteArrays
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*
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* @param ba1 A byte array
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* @param ba2 A byte array
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* @return If both arrays are non-NULL and their lengths are equal and
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* their contents are equal, returns TRUE. Otherwise, returns
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* FALSE.
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*
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* XXX - Should this be in strutil.c?
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*/
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gboolean byte_array_equal(GByteArray *ba1, GByteArray *ba2);
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2004-06-06 14:29:07 +00:00
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/** Return a XML escaped representation of the unescaped string.
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2006-09-22 21:14:54 +00:00
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* The returned string must be freed when no longer in use.
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2004-06-06 14:29:07 +00:00
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*
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* @param unescaped The unescaped string
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* @return An XML-escaped representation of the input string
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*/
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2004-05-01 20:46:24 +00:00
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gchar* xml_escape(const gchar *unescaped);
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2003-07-04 03:41:00 +00:00
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2007-01-11 02:42:34 +00:00
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/**
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* Return the first occurrence of needle in haystack.
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2004-06-06 14:29:07 +00:00
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* Algorithm copied from GNU's glibc 2.3.2 memcmp()
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*
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* @param haystack The data to search
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* @param haystack_len The length of the search data
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* @param needle The string to look for
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* @param needle_len The length of the search string
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* @return A pointer to the first occurrence of "needle" in
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* "haystack". If "needle" isn't found or is NULL, or if
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* "needle_len" is 0, NULL is returned.
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*/
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2003-08-27 15:23:11 +00:00
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const guint8 * epan_memmem(const guint8 *haystack, guint haystack_len,
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const guint8 *needle, guint needle_len);
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2003-07-04 03:41:00 +00:00
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/* Surround a string or a macro, resolved to a string, with double quotes */
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#define _STRINGIFY(a) # a
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#define STRINGIFY(a) _STRINGIFY(a)
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2004-08-13 02:39:49 +00:00
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/** Scan a string to make sure it's valid hex.
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*
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* @param string The string to validate
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* @param nbytes The length of the return buffer
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* @return A pointer to a buffer containing the converted raw bytes. This
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* buffer must be g_free()d by the caller.
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*/
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guint8 * convert_string_to_hex(const char *string, size_t *nbytes);
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/** Prep a string for case-sensitive vs case-insensitive searching.
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*
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* @param string The search string
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2004-10-27 04:45:00 +00:00
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* @param case_insensitive TRUE if case-insensitive, FALSE if not
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2004-08-13 02:39:49 +00:00
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* @return A direct copy of the string if it's a case-sensitive search and
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* an uppercased version if not. In either case the string must be g_free()d
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* by the caller.
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*/
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char * convert_string_case(const char *string, gboolean case_insensitive);
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2007-02-07 13:45:28 +00:00
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/** Finds the first occurence of string 'needle' in string 'haystack'.
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* The matching is done in a case insensitive manner.
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*
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* @param haystack The string possibly containing the substring
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* @param needle The substring to be searched
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* @return A pointer into 'haystack' where 'needle' is first found.
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* Otherwise it returns NULL.
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*/
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char * epan_strcasestr(const char *haystack, const char *needle);
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2009-02-17 23:15:35 +00:00
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/** Guarantee a non-null string.
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*
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* @param string The string to check
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* @return A pointer 'string' if it's non-null, otherwise "[NULL]".
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*/
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const char * string_or_null(const char *string);
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2009-08-19 18:37:13 +00:00
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int escape_string_len(const char *string);
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char * escape_string(char *dst, const char *string);
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2000-09-11 16:16:13 +00:00
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#endif /* __STRUTIL_H__ */
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