diff options
| -rw-r--r-- | tools/getline.c | 101 | ||||
| -rw-r--r-- | tools/getline.h | 1 | ||||
| -rw-r--r-- | tools/mingw_support.c | 99 | ||||
| -rw-r--r-- | tools/mingw_support.h | 2 | ||||
| -rw-r--r-- | tools/os_support.c | 3 | ||||
| -rw-r--r-- | tools/os_support.h | 4 |
6 files changed, 111 insertions, 99 deletions
diff --git a/tools/getline.c b/tools/getline.c new file mode 100644 index 0000000..3ba52a3 --- /dev/null +++ b/tools/getline.c @@ -0,0 +1,101 @@ +/* getline.c -- Replacement for GNU C library function getline + +Copyright (C) 1993, 1996, 2001, 2002 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Jan Brittenson, bson@gnu.ai.mit.edu. */ + +#include <assert.h> +#include <stdio.h> + +/* Always add at least this many bytes when extending the buffer. */ +#define MIN_CHUNK 64 + +/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR + + OFFSET (and null-terminate it). *LINEPTR is a pointer returned from + malloc (or NULL), pointing to *N characters of space. It is realloc'd + as necessary. Return the number of characters read (not including the + null terminator), or -1 on error or EOF. + NOTE: There is another getstr() function declared in <curses.h>. */ +static int getstr(char **lineptr, size_t *n, FILE *stream, + char terminator, size_t offset) +{ + int nchars_avail; /* Allocated but unused chars in *LINEPTR. */ + char *read_pos; /* Where we're reading into *LINEPTR. */ + int ret; + + if (!lineptr || !n || !stream) + return -1; + + if (!*lineptr) { + *n = MIN_CHUNK; + *lineptr = malloc(*n); + if (!*lineptr) + return -1; + } + + nchars_avail = *n - offset; + read_pos = *lineptr + offset; + + for (;;) { + register int c = getc(stream); + + /* We always want at least one char left in the buffer, since we + always (unless we get an error while reading the first char) + NUL-terminate the line buffer. */ + + assert(*n - nchars_avail == read_pos - *lineptr); + if (nchars_avail < 2) { + if (*n > MIN_CHUNK) + *n *= 2; + else + *n += MIN_CHUNK; + + nchars_avail = *n + *lineptr - read_pos; + *lineptr = realloc(*lineptr, *n); + if (!*lineptr) + return -1; + read_pos = *n - nchars_avail + *lineptr; + assert(*n - nchars_avail == read_pos - *lineptr); + } + + if (c == EOF || ferror (stream)) { + /* Return partial line, if any. */ + if (read_pos == *lineptr) + return -1; + else + break; + } + + *read_pos++ = c; + nchars_avail--; + + if (c == terminator) + /* Return the line. */ + break; + } + + /* Done - NUL terminate and return the number of chars read. */ + *read_pos = '\0'; + + ret = read_pos - (*lineptr + offset); + return ret; +} + +int getline (char **lineptr, size_t *n, FILE *stream) +{ + return getstr(lineptr, n, stream, '\n', 0); +} diff --git a/tools/getline.h b/tools/getline.h new file mode 100644 index 0000000..a2f35b9 --- /dev/null +++ b/tools/getline.h @@ -0,0 +1 @@ +int getline(char **lineptr, size_t *n, FILE *stream); diff --git a/tools/mingw_support.c b/tools/mingw_support.c index 6379710..18b69bb 100644 --- a/tools/mingw_support.c +++ b/tools/mingw_support.c @@ -136,101 +136,4 @@ char *strtok_r(char *s, const char *delim, char **save_ptr) return token; } -/* getline.c -- Replacement for GNU C library function getline - -Copyright (C) 1993, 1996, 2001, 2002 Free Software Foundation, Inc. - -This program is free software; you can redistribute it and/or -modify it under the terms of the GNU General Public License as -published by the Free Software Foundation; either version 2 of the -License, or (at your option) any later version. - -This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* Written by Jan Brittenson, bson@gnu.ai.mit.edu. */ - -/* Always add at least this many bytes when extending the buffer. */ -#define MIN_CHUNK 64 - -/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR - + OFFSET (and null-terminate it). *LINEPTR is a pointer returned from - malloc (or NULL), pointing to *N characters of space. It is realloc'd - as necessary. Return the number of characters read (not including the - null terminator), or -1 on error or EOF. - NOTE: There is another getstr() function declared in <curses.h>. */ -static int getstr(char **lineptr, size_t *n, FILE *stream, - char terminator, size_t offset) -{ - int nchars_avail; /* Allocated but unused chars in *LINEPTR. */ - char *read_pos; /* Where we're reading into *LINEPTR. */ - int ret; - - if (!lineptr || !n || !stream) - return -1; - - if (!*lineptr) { - *n = MIN_CHUNK; - *lineptr = malloc(*n); - if (!*lineptr) - return -1; - } - - nchars_avail = *n - offset; - read_pos = *lineptr + offset; - - for (;;) { - register int c = getc(stream); - - /* We always want at least one char left in the buffer, since we - always (unless we get an error while reading the first char) - NUL-terminate the line buffer. */ - - assert(*n - nchars_avail == read_pos - *lineptr); - if (nchars_avail < 2) { - if (*n > MIN_CHUNK) - *n *= 2; - else - *n += MIN_CHUNK; - - nchars_avail = *n + *lineptr - read_pos; - *lineptr = realloc(*lineptr, *n); - if (!*lineptr) - return -1; - read_pos = *n - nchars_avail + *lineptr; - assert(*n - nchars_avail == read_pos - *lineptr); - } - - if (c == EOF || ferror (stream)) { - /* Return partial line, if any. */ - if (read_pos == *lineptr) - return -1; - else - break; - } - - *read_pos++ = c; - nchars_avail--; - - if (c == terminator) - /* Return the line. */ - break; - } - - /* Done - NUL terminate and return the number of chars read. */ - *read_pos = '\0'; - - ret = read_pos - (*lineptr + offset); - return ret; -} - -int getline (char **lineptr, size_t *n, FILE *stream) -{ - return getstr(lineptr, n, stream, '\n', 0); -} +#include "getline.c" diff --git a/tools/mingw_support.h b/tools/mingw_support.h index 2793674..ee07290 100644 --- a/tools/mingw_support.h +++ b/tools/mingw_support.h @@ -45,6 +45,6 @@ int fsync(int fd); void *mmap(void *, size_t, int, int, int, int); int munmap(void *, size_t); char *strtok_r(char *s, const char *delim, char **save_ptr); -int getline(char **lineptr, size_t *n, FILE *stream); +#include "getline.h" #endif /* __MINGW_SUPPORT_H_ */ diff --git a/tools/os_support.c b/tools/os_support.c index 5b919aa..1ed89e6 100644 --- a/tools/os_support.c +++ b/tools/os_support.c @@ -23,3 +23,6 @@ #ifdef __MINGW32__ #include "mingw_support.c" #endif +#ifdef __APPLE__ +#include "getline.c" +#endif diff --git a/tools/os_support.h b/tools/os_support.h index 7bf930e..7dcbee4 100644 --- a/tools/os_support.h +++ b/tools/os_support.h @@ -28,4 +28,8 @@ #include "mingw_support.h" #endif +#ifdef __APPLE__ +#include "getline.h" +#endif + #endif /* __OS_SUPPORT_H_ */ |