mirror of
https://github.com/netsurf-browser/netsurf
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116 lines
4.0 KiB
C
116 lines
4.0 KiB
C
/*
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* Copyright 2016 Vincent Sanders <vince@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf 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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file
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* \brief Interface to utility string handling.
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*/
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#ifndef _NETSURF_UTILS_STRING_H_
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#define _NETSURF_UTILS_STRING_H_
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#include <stdlib.h>
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#include <stdarg.h>
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#include "utils/errors.h"
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/**
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* Replace consecutive whitespace with a single space.
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*
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* @todo determine if squash_whitespace utf-8 safe and that it needs to be
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*
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* \param s source string
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* \return heap allocated result, or NULL on memory exhaustion
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*/
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char *squash_whitespace(const char * s);
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/**
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* Converts NUL terminated UTF-8 encoded string s containing zero or more
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* spaces (char 32) or TABs (char 9) to non-breaking spaces
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* (0xC2 + 0xA0 in UTF-8 encoding).
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*
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* Caller needs to free() result. Returns NULL in case of error. No
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* checking is done on validness of the UTF-8 input string.
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*/
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char *cnv_space2nbsp(const char *s);
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/**
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* Create a human readable representation of a size in bytes.
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*
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* Does a simple conversion which assumes the user speaks English.
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* The buffer returned is one of three static ones so may change each
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* time this call is made. Don't store the buffer for later use.
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* It's done this way for convenience and to fight possible memory
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* leaks, it is not necessarily pretty.
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*
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* @param bytesize The size in bytes.
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* @return A human readable string representing the size.
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*/
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char *human_friendly_bytesize(unsigned long bytesize);
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/**
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* Generate a string from one or more component elements separated with
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* a single value.
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*
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* This is similar in intent to the perl join function creating a
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* single delimited string from an array of several.
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*
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* @note If a string is allocated it must be freed by the caller.
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*
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* @param[in,out] str pointer to string pointer if this is NULL enough
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* storage will be allocated for the complete path.
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* @param[in,out] size The size of the space available if \a str not
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* NULL on input and if not NULL set to the total
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* output length on output.
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* @param[in] sep The character to separate the elements with.
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* @param[in] nelm The number of elements up to a maximum of 16.
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* @param[in] ap The elements of the path as string pointers.
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* @return NSERROR_OK and the complete path is written to str or error
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* code on failure.
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*/
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nserror vsnstrjoin(char **str, size_t *size, char sep, size_t nelm, va_list ap);
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/**
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* Generate a string from one or more component elements separated with
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* a single value.
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*
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* This is similar in intent to the Perl join function creating a
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* single delimited string from an array of several.
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*
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* @note If a string is allocated it must be freed by the caller.
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*
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* @param[in,out] str pointer to string pointer if this is NULL enough
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* storage will be allocated for the complete path.
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* @param[in,out] size The size of the space available if \a str not
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* NULL on input and if not NULL set to the total
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* output length on output.
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* @param[in] sep The character to separate the elements with.
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* @param[in] nelm The number of elements up to a maximum of 16.
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* @param[in] ... The elements of the path as string pointers.
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* @return NSERROR_OK and the complete path is written to str or error
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* code on failure.
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*/
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nserror snstrjoin(char **str, size_t *size, char sep, size_t nelm, ...);
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#endif
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