73577f10a0
Interface and function as proposed by cls. The reasoning behind this function is that cls expressed his interest to keep memory allocation out of libutf, which is a very good motive. This simplifies the function a lot and should also increase the speed a bit, but the most important factor here is that there's no malloc anywhere in libutf, making it a lot smaller and more robust with a smaller attack-surface. Look at the paste(1) and tr(1) changes for an idiomatic way to allocate the right amount of space for the Rune-array.
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/* MIT/X Consortium Copyright (c) 2012 Connor Lane Smith <cls@lubutu.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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typedef int Rune;
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enum {
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UTFmax = 6, /* maximum bytes per rune */
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Runeself = 0x80, /* rune and utf are equal (<) */
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Runeerror = 0xFFFD, /* decoding error in utf */
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Runemax = 0x10FFFF /* maximum rune value */
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};
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int runetochar(char *, const Rune *);
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int chartorune(Rune *, const char *);
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int charntorune(Rune *, const char *, size_t);
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int runelen(const Rune);
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size_t runenlen(const Rune *, size_t);
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int fullrune(const char *, size_t);
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char *utfecpy(char *, char *, const char *);
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size_t utflen(const char *);
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size_t utfnlen(const char *, size_t);
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char *utfrune(const char *, Rune);
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char *utfrrune(const char *, Rune);
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char *utfutf(const char *, const char *);
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int isalnumrune(Rune);
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int isalpharune(Rune);
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int isblankrune(Rune);
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int iscntrlrune(Rune);
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int isdigitrune(Rune);
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int isgraphrune(Rune);
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int islowerrune(Rune);
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int isprintrune(Rune);
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int ispunctrune(Rune);
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int isspacerune(Rune);
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int istitlerune(Rune);
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int isupperrune(Rune);
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int isxdigitrune(Rune);
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Rune tolowerrune(Rune);
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Rune toupperrune(Rune);
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int utftorunestr(const char*, Rune *);
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int fgetrune(Rune *, FILE *);
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int efgetrune(Rune *, FILE *, const char *);
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int fputrune(const Rune *, FILE *);
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int efputrune(const Rune *, FILE *, const char *);
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