diff options
| -rw-r--r-- | libshouldbeinlibc/idvec.c | 81 | ||||
| -rw-r--r-- | libshouldbeinlibc/idvec.h | 46 | ||||
| -rw-r--r-- | libshouldbeinlibc/termsize.c | 54 |
3 files changed, 181 insertions, 0 deletions
diff --git a/libshouldbeinlibc/idvec.c b/libshouldbeinlibc/idvec.c new file mode 100644 index 00000000..412e7c32 --- /dev/null +++ b/libshouldbeinlibc/idvec.c @@ -0,0 +1,81 @@ +/* Routines for vectors of integers + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <malloc.h> +#include <string.h> +#include <ivec.h> + +/* Return a new ivec, or NULL if there wasn't enough memory. */ +struct ivec * +make_ivec () +{ + struct ivec *ivec = malloc (sizeof (struct ivec)); + if (ivec) + { + ivec->ints = 0; + ivec->num = ivec->alloced = 0; + } + return ivec; +} + +/* Insert I into IVEC at position POS, returning ENOMEM if there wasn't + enough memory, or 0. */ +error_t +ivec_insert (struct ivec *ivec, unsigned pos, int i) +{ + if (ivec->alloced == ivec->num) + { + unsigned new_size = ivec->alloced * 2 + 1; + int *new_ints = realloc (ivec->ints, new_size * sizeof (int)); + + if (! new_ints) + return ENOMEM; + + ivec->alloced = new_size; + ivec->ints = new_ints; + } + + if (pos < ivec->num) + bcopy (ivec->ints + pos, ivec->ints + pos + 1, ivec->num - pos); + + ivec->ints[pos] = i; + ivec->num++; + + return 0; +} + +/* Add I onto the end of IVEC, returning ENOMEM if there's not enough memory, + or 0. */ +error_t +ivec_add (struct ivec *ivec, int i) +{ + return ivec_insert (ivec, ivec->num, i); +} + +/* Returns true if IVEC contains I. */ +int +ivec_contains (struct ivec *ivec, int i) +{ + unsigned j; + for (j = 0; j < ivec->num; j++) + if (ivec->ints[j] == i) + return 1; + return 0; +} diff --git a/libshouldbeinlibc/idvec.h b/libshouldbeinlibc/idvec.h new file mode 100644 index 00000000..7ac8c50d --- /dev/null +++ b/libshouldbeinlibc/idvec.h @@ -0,0 +1,46 @@ +/* Routines for vectors of integers + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#ifndef __IVEC_H__ +#define __IVEC_H__ + +#include <errno.h> + +struct ivec +{ + int *ints; + unsigned num, alloced; +}; + +/* Return a new ivec, or NULL if there wasn't enough memory. */ +struct ivec *make_ivec (); + +/* Insert I into IVEC at position POS, returning ENOMEM if there wasn't + enough memory, or 0. */ +error_t ivec_insert (struct ivec *ivec, unsigned pos, int i); + +/* Add I onto the end of IVEC, returning ENOMEM if there's not enough memory, + or 0. */ +error_t ivec_add (struct ivec *ivec, int i); + +/* Returns true if IVEC contains I. */ +int ivec_contains (struct ivec *ivec, int i); + +#endif /* __IVEC_H__ */ diff --git a/libshouldbeinlibc/termsize.c b/libshouldbeinlibc/termsize.c new file mode 100644 index 00000000..46666975 --- /dev/null +++ b/libshouldbeinlibc/termsize.c @@ -0,0 +1,54 @@ +/* Function to try and deduce what size the terminal is + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <sys/ioctl.h> + +/* Returns what we think is the size of the terminal attached to + file descriptor FD, of type TYPE, in WIDTH and/or HEIGHT. If FD is + negative, the terminal isn't queried, and if TYPE is NULL, it isn't used. + Both WIDTH and HEIGHT may be NULL if only partial information is needed. + True is returned upon success. Even if false is returned, both output + values are still written, with 0 for unknown, in case partial information + is useful. */ +int +deduce_term_size (int fd, char *type, int *width, int *height) +{ + int w = 0, h = 0; + struct winsize ws; + + if (fd >= 0 && ioctl (fd, TIOCGWINSZ, &ws) == 0) + /* Look at the actual terminal. */ + { + w = ws.ws_col; + h = ws.ws_row; + } + if (((width && !w) || (height && !h)) && type) + /* Try the terminal type. */ + { + /* XXX */ + } + + if (width) + *width = w; + if (height) + *height = h; + + return (!width || w) && (!height && h); +} |