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-rw-r--r--src/util.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/src/util.c b/src/util.c
deleted file mode 100644
index 2fdbeae..0000000
--- a/src/util.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/**
- * coopgammad -- Cooperative gamma server
- * Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- */
-#include "util.h"
-
-#include <libclut.h>
-
-#include <sys/stat.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-
-
-/**
- * Duplicate a memory segment
- *
- * @param src The memory segment, must not be `NULL`
- * @param n The size of the memory segment, must not be zero
- * @return The duplicate of the memory segment,
- * `NULL` on error
- */
-void* memdup(const void* restrict src, size_t n)
-{
- void* dest = malloc(n);
- if (dest == NULL)
- return NULL;
- memcpy(dest, src, n);
- return dest;
-}
-
-
-/**
- * Read an entire file
- *
- * @param fd The file descriptor
- * @param n Output for the size of the file
- * @return The read content, plus a NUL byte at
- * the end (not counted in `*n`)
- */
-void* nread(int fd, size_t* restrict n)
-{
- size_t size = 32;
- ssize_t got;
- struct stat st;
- char* buf = NULL;
- char* new;
- int saved_errno;
-
- *n = 0;
-
- if (!fstat(fd, &st))
- size = st.st_size <= 0 ? 32 : (size_t)(st.st_size);
-
- buf = malloc(size + 1);
- if (buf == NULL)
- return NULL;
-
- for (;;)
- {
- if (*n == size)
- {
- new = realloc(buf, (size <<= 1) + 1);
- if (new == NULL)
- goto fail;
- buf = new;
- }
-
- got = read(fd, buf + *n, size - *n);
- if (got < 0)
- {
- if (errno == EINTR)
- continue;
- goto fail;
- }
- if (got == 0)
- break;
- *n += (size_t)got;
- }
-
- buf[*n] = '\0';
- return buf;
- fail:
- saved_errno = errno;
- free(buf);
- errno = saved_errno;
- return NULL;
-}
-
-
-/**
- * Write an entire buffer to a file
- *
- * Not cancelled by `EINTR`
- *
- * @param fd The file descriptor
- * @param buf The buffer which shall be written to the fail
- * @param n The size of the buffer
- * @return The number of written bytes, less than `n`
- * on error, cannot exceed `n`
- */
-size_t nwrite(int fd, const void* restrict buf, size_t n)
-{
- const char* restrict bs = buf;
- ssize_t wrote;
- size_t ptr = 0;
-
- while (ptr < n)
- {
- wrote = write(fd, bs + ptr, n - ptr);
- if (wrote <= 0)
- {
- if ((wrote < 0) && (errno == EINTR))
- continue;
- return ptr;
- }
- ptr += (size_t)wrote;
- }
-
- return ptr;
-}
-
-
-/**
- * Duplicate a file descriptor an make sure
- * the new file descriptor's index as a
- * specified minimum value
- *
- * @param fd The file descriptor
- * @param atleast The least acceptable new file descriptor
- * @return The new file descriptor, -1 on error
- */
-int dup2atleast(int fd, int atleast)
-{
- int* stack = malloc((size_t)(atleast + 1) * sizeof(int));
- size_t stack_ptr = 0;
- int new = -1, saved_errno;
-
- if (stack == NULL)
- goto fail;
-
- for (;;)
- {
- new = dup(fd);
- if (new < 0)
- goto fail;
- if (new >= atleast)
- break;
- }
-
- fail:
- saved_errno = errno;
- while (stack_ptr--)
- close(stack[stack_ptr]);
- free(stack);
- errno = saved_errno;
- return new;
-}
-
-
-/**
- * Perform a timed suspention of the process.
- * The process resumes when the timer expires,
- * or when it is interrupted.
- *
- * @param ms The number of milliseconds to sleep,
- * must be less than 1000
- */
-void msleep(unsigned ms)
-{
- struct timespec ts;
- ts.tv_sec = 0;
- ts.tv_nsec = (long)ms * 1000000L;
- if (clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL) == ENOTSUP)
- nanosleep(&ts, NULL);
-}
-
-
-/**
- * Check whether a NUL-terminated string is encoded in UTF-8
- *
- * @param string The string
- * @return Zero if good, -1 on encoding error
- */
-int verify_utf8(const char* restrict string)
-{
- static long BYTES_TO_MIN_BITS[] = {0, 0, 8, 12, 17, 22, 37};
- static long BYTES_TO_MAX_BITS[] = {0, 7, 11, 16, 21, 26, 31};
- long bytes = 0, read_bytes = 0, bits = 0, c, character = 0;
-
- /* min bits max bits
- 0....... 0 7
- 110..... 10...... 8 11
- 1110.... 10...... 10...... 12 16
- 11110... 10...... 10...... 10...... 17 21
- 111110.. 10...... 10...... 10...... 10...... 22 26
- 1111110. 10...... 10...... 10...... 10...... 10...... 27 31
- */
-
- while ((c = (long)(*string++)))
- if (read_bytes == 0)
- {
- /* First byte of the character. */
-
- if ((c & 0x80) == 0x00)
- /* Single-byte character. */
- continue;
-
- if ((c & 0xC0) == 0x80)
- /* Single-byte character marked as multibyte, or
- a non-first byte in a multibyte character. */
- return -1;
-
- /* Multibyte character. */
- while ((c & 0x80))
- bytes++, c <<= 1;
- read_bytes = 1;
- character = c & 0x7F;
- if (bytes > 6)
- /* 31-bit characters can be encoded with 6-bytes,
- and UTF-8 does not cover higher code points. */
- return -1;
- }
- else
- {
- /* Not first byte of the character. */
-
- if ((c & 0xC0) != 0x80)
- /* Beginning of new character before a
- multibyte character has ended. */
- return -1;
-
- character = (character << 6) | (c & 0x7F);
-
- if (++read_bytes < bytes)
- /* Not at last byte yet. */
- continue;
-
- /* Check that the character is not unnecessarily long. */
- while (character)
- character >>= 1, bits++;
- if ((bits < BYTES_TO_MIN_BITS[bytes]) || (BYTES_TO_MAX_BITS[bytes] < bits))
- return -1;
-
- read_bytes = bytes = bits = 0;
- }
-
- /* Make sure we did not stop at the middle of a multibyte character. */
- return read_bytes == 0 ? 0 : -1;
-}
-
-
-/**
- * Make identity mapping ramps
- *
- * @param ramps Output parameter for the ramps
- * @param output The output for which the ramps shall be configured
- * @return Zero on success, -1 on error
- */
-int make_plain_ramps(union gamma_ramps* restrict ramps, struct output* restrict output)
-{
- COPY_RAMP_SIZES(&(ramps->u8), output);
- switch (output->depth)
- {
- case 8:
- if (libgamma_gamma_ramps8_initialise(&(ramps->u8)))
- return -1;
- libclut_start_over(&(ramps->u8), UINT8_MAX, uint8_t, 1, 1, 1);
- break;
- case 16:
- if (libgamma_gamma_ramps16_initialise(&(ramps->u16)))
- return -1;
- libclut_start_over(&(ramps->u16), UINT16_MAX, uint16_t, 1, 1, 1);
- break;
- case 32:
- if (libgamma_gamma_ramps32_initialise(&(ramps->u32)))
- return -1;
- libclut_start_over(&(ramps->u32), UINT32_MAX, uint32_t, 1, 1, 1);
- break;
- case 64:
- if (libgamma_gamma_ramps64_initialise(&(ramps->u64)))
- return -1;
- libclut_start_over(&(ramps->u64), UINT64_MAX, uint64_t, 1, 1, 1);
- break;
- case -1:
- if (libgamma_gamma_rampsf_initialise(&(ramps->f)))
- return -1;
- libclut_start_over(&(ramps->f), 1.0f, float, 1, 1, 1);
- break;
- case -2:
- if (libgamma_gamma_rampsd_initialise(&(ramps->d)))
- return -1;
- libclut_start_over(&(ramps->d), (double)1, double, 1, 1, 1);
- break;
- default:
- abort();
- }
- return 0;
-}
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-20 03:58:19 +0000