From a41ebbb69778af8d160fe9207d6d353dc9c141d1 Mon Sep 17 00:00:00 2001 From: mysterywolf <920369182@qq.com> Date: Sat, 5 Sep 2020 15:42:03 +0800 Subject: [PATCH] add posix functions getline/getdelim --- components/libc/getline/README.md | 30 ++++++++++ components/libc/getline/SConscript | 13 +++++ components/libc/getline/UNLICENSE | 24 ++++++++ components/libc/getline/posix_getline.c | 78 +++++++++++++++++++++++++ components/libc/getline/posix_getline.h | 22 +++++++ 5 files changed, 167 insertions(+) create mode 100644 components/libc/getline/README.md create mode 100644 components/libc/getline/SConscript create mode 100644 components/libc/getline/UNLICENSE create mode 100644 components/libc/getline/posix_getline.c create mode 100644 components/libc/getline/posix_getline.h diff --git a/components/libc/getline/README.md b/components/libc/getline/README.md new file mode 100644 index 0000000000..8f52898c82 --- /dev/null +++ b/components/libc/getline/README.md @@ -0,0 +1,30 @@ +# getline/getdelim for RT-Thread POSIX + +[![Build Status](https://travis-ci.org/ivanrad/getline.svg?branch=master)](https://travis-ci.org/ivanrad/getline) + +https://github.com/ivanrad/getline + +Read a delimited record from stream. + +Yet another (hopefully portable C) implementation of getline/getdelim. +These are ersatz functions, a drop-in replacement, to be used on those occasions when your C library does not already support them. + +For more details, see [Open Group Base Specification for getdelim/getline][opengroup-spec]. + +## Building the project + +Just run `make`. + +## License + +This code is unlicensed -- free and released into the public domain. See `UNLICENSE` file for more information. + +[opengroup-spec]: http://pubs.opengroup.org/onlinepubs/9699919799/functions/getline.html + + +## 联系&维护 +Meco Man + +jiantingman@foxmail.com + +https://github.com/mysterywolf/getline diff --git a/components/libc/getline/SConscript b/components/libc/getline/SConscript new file mode 100644 index 0000000000..7bede9f31b --- /dev/null +++ b/components/libc/getline/SConscript @@ -0,0 +1,13 @@ +# RT-Thread building script for component + +from building import * + +cwd = GetCurrentDir() +src = Glob('*.c') + Glob('*.cpp') +CPPPATH = [cwd] + +group = DefineGroup('libc', src, + depend = ['RT_USING_LIBC', 'RT_USING_POSIX'], + CPPPATH = CPPPATH) + +Return('group') diff --git a/components/libc/getline/UNLICENSE b/components/libc/getline/UNLICENSE new file mode 100644 index 0000000000..68a49daad8 --- /dev/null +++ b/components/libc/getline/UNLICENSE @@ -0,0 +1,24 @@ +This is free and unencumbered software released into the public domain. + +Anyone is free to copy, modify, publish, use, compile, sell, or +distribute this software, either in source code form or as a compiled +binary, for any purpose, commercial or non-commercial, and by any +means. + +In jurisdictions that recognize copyright laws, the author or authors +of this software dedicate any and all copyright interest in the +software to the public domain. We make this dedication for the benefit +of the public at large and to the detriment of our heirs and +successors. We intend this dedication to be an overt act of +relinquishment in perpetuity of all present and future rights to this +software under copyright law. + +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 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. + +For more information, please refer to diff --git a/components/libc/getline/posix_getline.c b/components/libc/getline/posix_getline.c new file mode 100644 index 0000000000..d4a7d3fce6 --- /dev/null +++ b/components/libc/getline/posix_getline.c @@ -0,0 +1,78 @@ +/* posix_getline.c + * RT-Thread POSIX + * getdelim(), getline() - read a delimited record from stream, ersatz implementation + * https://man7.org/linux/man-pages/man3/getline.3.html + * Authors: + * https://github.com/ivanrad/getline + * https://github.com/mysterywolf/getline/ + * + * Meco Man 2020-09-03 First Version + */ + +#include +#include +#include +#include + +ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream) { + char *cur_pos, *new_lineptr; + size_t new_lineptr_len; + int c; + + if (lineptr == NULL || n == NULL || stream == NULL) { + errno = EINVAL; + return -1; + } + + if (*lineptr == NULL) { + *n = 128; /* init len */ + if ((*lineptr = (char *)malloc(*n)) == NULL) { + errno = ENOMEM; + return -1; + } + } + + cur_pos = *lineptr; + for (;;) { + c = getc(stream); + + if (ferror(stream) || (c == EOF && cur_pos == *lineptr)) + return -1; + + if (c == EOF) + break; + + if ((*lineptr + *n - cur_pos) < 2) { + if (SSIZE_MAX / 2 < *n) { +#ifdef EOVERFLOW + errno = EOVERFLOW; +#else + errno = ERANGE; /* no EOVERFLOW defined */ +#endif + return -1; + } + new_lineptr_len = *n * 2; + + if ((new_lineptr = (char *)realloc(*lineptr, new_lineptr_len)) == NULL) { + errno = ENOMEM; + return -1; + } + cur_pos = new_lineptr + (cur_pos - *lineptr); + *lineptr = new_lineptr; + *n = new_lineptr_len; + } + + *cur_pos++ = (char)c; + + if (c == delim) + break; + } + + *cur_pos = '\0'; + return (ssize_t)(cur_pos - *lineptr); +} + +ssize_t getline(char **lineptr, size_t *n, FILE *stream) { + return getdelim(lineptr, n, '\n', stream); +} + diff --git a/components/libc/getline/posix_getline.h b/components/libc/getline/posix_getline.h new file mode 100644 index 0000000000..1b3e43da1e --- /dev/null +++ b/components/libc/getline/posix_getline.h @@ -0,0 +1,22 @@ +/* posix_getline.h + * RT-Thread POSIX + * getdelim(), getline() - read a delimited record from stream, ersatz implementation + * https://man7.org/linux/man-pages/man3/getline.3.html + * Authors: + * https://github.com/ivanrad/getline + * https://github.com/mysterywolf/getline/ + * + * Meco Man 2020-09-03 First Version + */ + + +#ifndef POSIX_GETLINE_H +#define POSIX_GETLINE_H + +#include + +ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream); +ssize_t getline(char **lineptr, size_t *n, FILE *stream); + +#endif /* POSIX_GETLINE_H */ +