110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <time.h>
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#ifndef MAX
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#define MAX(A, B) ((A) > (B) ? (A) : (B))
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#endif
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#ifndef MIN
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#define MIN(A, B) ((A) < (B) ? (A) : (B))
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#endif
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#ifndef BETWEEN
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#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
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#endif
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#ifndef INTERSECT
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#define INTERSECT(x,y,w,h,r) (MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
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&& MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
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#endif
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#ifndef LENGTH
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#define LENGTH(X) (sizeof X / sizeof X[0])
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#endif
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#ifndef TEXTW
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#define TEXTW(X) (draw_font_getwidth(draw, (X), False) + sp.lrpad)
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#endif
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#ifndef TEXTWM
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#define TEXTWM(X) (draw_font_getwidth(draw, (X), True) + sp.lrpad)
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#endif
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#ifndef NUMBERSMAXDIGITS
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#define NUMBERSMAXDIGITS 100
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#endif
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#ifndef NUMBERSBUFSIZE
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#define NUMBERSBUFSIZE (NUMBERSMAXDIGITS * 2) + 1
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#endif
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#ifndef MAXITEMLENGTH
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#define MAXITEMLENGTH 1024
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#endif
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size_t sp_strncpy(char *restrict dst, const char *restrict src, size_t size);
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void die(const char *fmt, ...);
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void *ecalloc(size_t nmemb, size_t size);
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size_t sp_strncpy(char *restrict dst, const char *restrict src, size_t size) {
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int offset;
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offset = 0;
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if (size > 0) {
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while (*(src+offset) != '\0' ) {
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if (offset == size) {
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offset--;
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break;
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}
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*(dst+offset) = *(src+offset);
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offset++;
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}
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}
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*(dst+offset) = '\0';
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while (*(src+offset) != '\0')
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offset++;
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return offset;
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}
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void die(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
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fputc(' ', stderr);
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perror(NULL);
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} else {
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fputc('\n', stderr);
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}
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exit(1);
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}
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void *ecalloc(size_t nmemb, size_t size) {
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void *p;
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if (!(p = calloc(nmemb, size)))
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die("calloc:");
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return p;
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}
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int msleep(long sec) {
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struct timespec ts;
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int ret;
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if (sec < 0) {
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errno = EINVAL;
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return -1;
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}
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ts.tv_sec = sec / 1000;
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ts.tv_nsec = (sec % 1000) * 1000000;
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do {
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ret = nanosleep(&ts, &ts);
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} while (ret && errno == EINTR);
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return ret;
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}
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