mirror of /home/gitosis/repositories/libowfat.git
even more man pages
Felix von Leitner
21 years ago
parent
10f26fd5bc
commit
5a0d6b1ecb
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.TH case_diffb 3
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.SH NAME
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case_diffb \- compare strings case-insensitively
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.SH SYNTAX
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.B #include <case.h>
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int \fBcase_diffb\fP(const char* \fIa\fR,const char* \fIb\fR);
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.SH DESCRIPTION
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case_diffb is similar to byte_diff. The difference is that for the
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comparison 'A' == 'a', 'B' == 'b', ..., 'Z' == 'z'.
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.SH "SEE ALSO"
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byte_diff(3)
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@ -0,0 +1,12 @@
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.TH case_diffs 3
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.SH NAME
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case_diffs \- compare strings case-insensitively
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.SH SYNTAX
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.B #include <case.h>
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int \fBcase_diffs\fP(const char* \fIa\fR,const char* \fIb\fR);
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.SH DESCRIPTION
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case_diffs is similar to str_diff. The difference is that for the
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comparison 'A' == 'a', 'B' == 'b', ..., 'Z' == 'z'.
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.SH "SEE ALSO"
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str_diff(3)
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@ -0,0 +1,12 @@
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.TH case_lowerb 3
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.SH NAME
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case_lowerb \- compare strings case-insensitively
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.SH SYNTAX
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.B #include <case.h>
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int \fBcase_lowerb\fP(char* \fIs\fR,unsigned int \fIlen\fR);
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.SH DESCRIPTION
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case_lowerb converts each 'A' to 'a', 'B' to 'b', ..., 'Z' to 'z' in
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\fIs\fR[0], \fIs\fR[1], ..., \fIs\fR[\fIlen\fR].
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.SH "SEE ALSO"
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case_lowerb(3)
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@ -0,0 +1,12 @@
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.TH case_lowers 3
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.SH NAME
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case_lowers \- compare strings case-insensitively
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.SH SYNTAX
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.B #include <case.h>
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int \fBcase_lowers\fP(char* \fIs\fR);
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.SH DESCRIPTION
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case_lowers converts each 'A' to 'a', 'B' to 'b', ..., 'Z' to 'z' for
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each character in \fIs\fR until the first \\0.
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.SH "SEE ALSO"
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case_lowerb(3)
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@ -0,0 +1,12 @@
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.TH case_starts 3
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.SH NAME
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case_starts \- compare prefixes of strings case-insensitively
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.SH SYNTAX
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.B #include <case.h>
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int \fBcase_starts\fP(const char* \fIa\fR,const char* \fIb\fR);
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.SH DESCRIPTION
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case_starts returns 1 if \fIb\fR is a prefix of \fIa\fR, 0 otherwise.
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For this comparison, 'A' == 'a', 'B' == 'b', ..., 'Z' == 'z'.
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.SH "SEE ALSO"
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str_start(3)
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#include "case.h"
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/* str_start returns 1 if the b is a prefix of a, 0 otherwise */
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int case_starts(const char* a, const char* b) {
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register const char* s=a;
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register const char* t=b;
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for (;;) {
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register unsigned char x,y;
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if (!*t) return 1;
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x = *s - 'A';
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if (x <= 'Z' - 'A') x += 'a'; else x += 'A';
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y = *t - 'A';
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if (y <= 'Z' - 'A') y += 'a'; else y += 'A';
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if (x != y) break;
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if (!x) break;
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++s; ++t;
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}
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return 0;
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}
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.TH openreadclose 3
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.SH NAME
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openreadclose \- read a whole file into a stralloc
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.SH SYNTAX
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.B #include <openreadclose.h>
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extern int \fBopenreadclose\fP(const char *\fIfilename\fR,
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stralloc* \fIsa\fR,unsigned int \fIbufsize\fR);
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.SH DESCRIPTION
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openreadclose opens the file \fIfilename\fR for reading and reads the
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whole content into the stralloc \fIsa\fR. The file is read in chunks of
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\fIbufsize\fR bytes size. If everything worked fine, openreadclose
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returns 0. A not existing file is treated as an empty file. On error,
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openreadclose returns -1 and sets errno appropriately.
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.SH "SEE ALSO"
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open_read(3), readclose(3)
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.TH readclose 3
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.SH NAME
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readclose \- read a whole file into a stralloc
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.SH SYNTAX
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.B #include <readclose.h>
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int \fBreadclose\fP(int fd,stralloc* \fIsa\fR,unsigned int \fIbufsize\fR);
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.SH DESCRIPTION
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readclose reads the
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whole content into the stralloc \fIsa\fR. The file is read in chunks of
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\fIbufsize\fR bytes size. If everything worked fine, readclose returns
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0. On error, readclose returns -1 and sets errno appropriately.
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.SH "SEE ALSO"
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open_read(3), openreadclose(3), readclose_append(3)
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.TH readclose_append 3
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.SH NAME
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readclose_append \- read a whole file into a stralloc
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.SH SYNTAX
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.B #include <readclose.h>
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int \fBreadclose_append\fP(int fd,stralloc* \fIsa\fR,
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unsigned int \fIbufsize\fR);
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.SH DESCRIPTION
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readclose_append reads the
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whole content into the stralloc \fIsa\fR, appending it to the existing
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content. The file is read in chunks of
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\fIbufsize\fR bytes size. If everything worked fine, readclose_append returns
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0. On error, readclose_append returns -1 and sets errno appropriately.
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.SH "SEE ALSO"
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open_read(3), openreadclose(3), readclose(3)
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@ -0,0 +1,13 @@
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.TH tai_add 3
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.SH NAME
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tai_add \- add two struct tai
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_add\fP(struct tai* \fIt\fR,const struct tai* \fIa\fR,
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const struct tai* \fIb\fR);
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.SH DESCRIPTION
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\fBtai_add\fR adds \fIa\fR to \fIb\fR and writes the result to \fIt\fR.
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The inputs and output may overlap.
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.SH "SEE ALSO"
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taia_add(3), tai_sub(3)
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.TH tai_approx 3
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.SH NAME
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tai_approx \- return double-precision approximation
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_approx\fP(const struct tai* \fIt\fR);
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.SH DESCRIPTION
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tai_approx returns a double-precision approximation of \fIt\fR. The result of
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tai_approx is always nonnegative.
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.SH "SEE ALSO"
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taia_approx(3)
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.TH tai_less 3
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.SH NAME
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tai_less \- compare two struct tai
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_less\fP(const struct tai* \fIa\fR,
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const struct tai* \fIb\fR);
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.SH DESCRIPTION
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\fBtai_less\fR returns 1 if \fIa\fR is less than \fIb\fR, 0 otherwise.
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.SH "SEE ALSO"
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taia_less(3)
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.TH tai_now 3
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.SH NAME
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tai_now \- get current time
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_now\fP(struct tai* \fIt\fR);
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.SH DESCRIPTION
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tai_now puts the current time into \fIt\fR. More precisely: tai_now puts into
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\fIt\fR its best guess as to the TAI64 label for the 1-second interval that
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contains the current time.
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This implementation of tai_now assumes that the time_t returned from the
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time function represents the number of TAI seconds since 1970-01-01
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00:00:10 TAI. This matches the convention used by the Olson tz library
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in ``right'' mode.
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.SH "SEE ALSO"
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taia_now(3)
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.TH tai_pack 3
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.SH NAME
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tai_pack \- convert to external TAI64 format
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_pack\fP(char* buf,const struct tai* \fIt\fR);
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.SH DESCRIPTION
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tai_pack converts a TAI64 label from internal format in \fIt\fR to external
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TAI64 format in \fIbuf\fR.
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See http://cr.yp.to/libtai/tai64.html
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.SH "SEE ALSO"
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taia_pack(3), tai_unpack(3)
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.TH tai_sub 3
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.SH NAME
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tai_sub \- subtract two struct tai
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_sub\fP(struct tai* \fIt\fR,const struct tai* \fIa\fR,
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const struct tai* \fIb\fR);
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.SH DESCRIPTION
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\fBtai_sub\fR subtracts \fIb\fR from \fIa\fR and writes the result to \fIt\fR.
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The inputs and output may overlap.
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.SH "SEE ALSO"
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taia_sub(3), tai_add(3)
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.TH tai_unpack 3
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.SH NAME
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tai_unpack \- convert to external TAI64 format
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.SH SYNTAX
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.B #include <tai.h>
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extern int \fBtai_unpack\fP(const char* buf,struct tai* \fIt\fR);
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.SH DESCRIPTION
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tai_unpack converts a TAI64 label from external TAI64 format in
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\fIbuf\fR to internal format in \fIt\fR.
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.SH "SEE ALSO"
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taia_unpack(3), tai_pack(3)
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.TH taia_add 3
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.SH NAME
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taia_add \- add two struct taia
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_add\fP(struct taia* \fIt\fR,const struct taia* \fIa\fR,
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const struct taia* \fIb\fR);
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.SH DESCRIPTION
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\fBtaia_add\fR adds \fIa\fR to \fIb\fR and writes the result to \fIt\fR.
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The inputs and output may overlap.
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.SH "SEE ALSO"
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tai_add(3), taia_sub(3), taia_addsec(3)
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.TH taia_addsec 3
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.SH NAME
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taia_addsec \- add n seconds to a struct taia
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_addsec\fP(struct taia* \fIt\fR,const struct taia* \fIs\fR,
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int \fIsecs\fR);
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.SH DESCRIPTION
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\fBtaia_addsec\fR adds \fIsecs\fR seconds to \fIs\fR and writes the result to \fIt\fR.
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The inputs and output may overlap.
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.SH "SEE ALSO"
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taia_sub(3), taia_add(3)
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@ -0,0 +1,12 @@
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.TH taia_approx 3
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.SH NAME
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taia_approx \- return double-precision approximation
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_approx\fP(const struct taia* \fIt\fR);
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.SH DESCRIPTION
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taia_approx returns a double-precision approximation of \fIt\fR. The result of
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taia_approx is always nonnegative.
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.SH "SEE ALSO"
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tai_approx(3)
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.TH taia_frac 3
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.SH NAME
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taia_frac \- get current time
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.SH SYNTAX
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.B #include <taia.h>
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int \fBtaia_frac\fP(const struct taia* \fIt\fR);
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.SH DESCRIPTION
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taia_frac returns a double-precision approximation to the fraction part
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of \fIt\fR. The result of taia_frac is always nonnegative.
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.SH "SEE ALSO"
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taia_approx(3)
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.TH taia_less 3
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.SH NAME
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taia_less \- compare two struct taia
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_less\fP(const struct tai* \fIa\fR,
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const struct tai* \fIb\fR);
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.SH DESCRIPTION
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\fBtaia_less\fR returns 1 if \fIa\fR is less than \fIb\fR, 0 otherwise.
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.SH "SEE ALSO"
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taia_less(3)
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.TH taia_now 3
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.SH NAME
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taia_now \- get current time
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_now\fP(struct taia* \fIt\fR);
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.SH DESCRIPTION
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taia_now puts the current time into \fIt\fR. More precisely: tai_now puts into
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\fIt\fR its best guess as to the TAI64NA label for the 1-attosecond interval that
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contains the current time.
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This implementation of taia_now assumes that the time_t returned from
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the time function represents the number of TAI seconds since 1970-01-01
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00:00:10 TAI. This matches the convention used by the Olson tz library
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in ``right'' mode.
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Beware that many clocks are not set accurately, and even the best
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scientific clocks are nowhere near 1-attosecond accuracy; however, an
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inaccurate clock may still produce reasonably accurate time differences.
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.SH "SEE ALSO"
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tai_now(3)
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.TH taia_pack 3
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.SH NAME
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taia_pack \- convert to external TAI64NA format
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_pack\fP(char* buf,const struct taia* \fIt\fR);
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.SH DESCRIPTION
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taia_pack converts a TAI64NA label from internal format in \fIt\fR to external
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TAI64NA format in \fIbuf\fR.
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See http://cr.yp.to/libtai/tai64.html
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.SH "SEE ALSO"
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tai_pack(3), taia_unpack(3)
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.TH taia_sub 3
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.SH NAME
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taia_sub \- subtract two struct taia
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_sub\fP(struct taia* \fIt\fR,const struct taia* \fIa\fR,
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const struct taia* \fIb\fR);
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.SH DESCRIPTION
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\fBtaia_sub\fR subtracts \fIb\fR from \fIa\fR and writes the result to \fIt\fR.
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The inputs and output may overlap.
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.SH "SEE ALSO"
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tai_sub(3), taia_add(3)
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.TH taia_tai 3
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.SH NAME
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taia_tai \- get current time
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_tai\fP(const struct taia* \fIt\fR,struct tai* \fIsec\fR);
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.SH DESCRIPTION
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taia_tai places into \fIsec\fR the integer part of \fIt\fR. If \fIt\fR
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contains a TAI64NA label then \fIsec\fR will contain the corresponding
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TAI64 label.
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.TH taia_uint 3
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.SH NAME
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taia_uint \- convert seconds into struct taia
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_uint\fP(struct taia* \fIt\fR,unsigned int \fIsecs\fR);
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.SH DESCRIPTION
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taia_uint converts \fIsecs\fR into a struct taia (setting the fractional
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part to zero).
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.TH taia_unpack 3
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.SH NAME
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taia_unpack \- convert to external TAI64NA format
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.SH SYNTAX
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.B #include <taia.h>
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extern int \fBtaia_unpack\fP(const char* buf,struct taia* \fIt\fR);
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.SH DESCRIPTION
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taia_unpack converts a TAI64NA label from external TAI64NA format in
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\fIbuf\fR to internal format in \fIt\fR.
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.SH "SEE ALSO"
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tai_unpack(3), taia_pack(3)
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#include "taia.h"
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void taia_unpack(s,t)
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char *s;
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struct taia *t;
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{
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unsigned long x;
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tai_unpack(s,&t->sec);
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s += 8;
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x = (unsigned char) s[4];
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x <<= 8; x += (unsigned char) s[5];
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x <<= 8; x += (unsigned char) s[6];
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x <<= 8; x += (unsigned char) s[7];
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t->atto = x;
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x = (unsigned char) s[0];
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x <<= 8; x += (unsigned char) s[1];
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x <<= 8; x += (unsigned char) s[2];
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x <<= 8; x += (unsigned char) s[3];
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t->nano = x;
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}
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@ -0,0 +1,39 @@
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#include <dns.h>
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#include <ip4.h>
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#include <buffer.h>
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#include <errno.h>
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#include <string.h>
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int main(int argc,char* argv[]) {
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static char seed[128];
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static stralloc fqdn;
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static stralloc out;
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char str[IP4_FMT];
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int i;
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dns_random_init(seed);
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if (*argv) ++argv;
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while (*argv) {
|
||||
if (!stralloc_copys(&fqdn,*argv)) {
|
||||
buffer_putsflush(buffer_2,"out of memory\n");
|
||||
return 111;
|
||||
}
|
||||
if (dns_ip4(&out,&fqdn) == -1) {
|
||||
buffer_puts(buffer_2,"unable to find IP address for ");
|
||||
buffer_puts(buffer_2,*argv);
|
||||
buffer_puts(buffer_2,": ");
|
||||
buffer_puts(buffer_2,strerror(errno));
|
||||
buffer_putnlflush(buffer_2);
|
||||
return 111;
|
||||
}
|
||||
|
||||
for (i = 0;i + 4 <= out.len;i += 4) {
|
||||
buffer_put(buffer_1,str,ip4_fmt(str,out.s + i));
|
||||
buffer_puts(buffer_1," ");
|
||||
}
|
||||
buffer_puts(buffer_1,"\n");
|
||||
++argv;
|
||||
}
|
||||
buffer_flush(buffer_1);
|
||||
return 0;
|
||||
}
|
||||
@ -0,0 +1,51 @@
|
||||
.TH iopause 3
|
||||
.SH NAME
|
||||
iopause \-
|
||||
.SH SYNTAX
|
||||
.B #include <iopause.h>
|
||||
|
||||
int \fBiopause\fP(iopause_fd** \fIx\fR,unsigned int \fIlen\fR,
|
||||
struct taia \fIdeadline\fR,struct taia \fIstamp\fR);
|
||||
.SH DESCRIPTION
|
||||
iopause checks for file descriptor readability or writability as specified
|
||||
by \fIx\fR[0].fd, \fIx\fR[0].events, \fIx\fR[1].fd, \fIx\fR[1].events, ..., \fIx\fR[\fIlen\fR-1].fd,
|
||||
\fIx\fR[\fIlen\fR-1].events. If \fIx\fR[i].events includes the bit IOPAUSE_READ, iopause
|
||||
checks for readability of the descriptor \fIx\fR[i].fd; if \fIx\fR[i].events includes
|
||||
the bit IOPAUSE_WRITE, iopause checks for writability of the descriptor
|
||||
\fIx\fR[i].fd; other bits in \fIx\fR[i].events have undefined effects.
|
||||
|
||||
iopause sets the IOPAUSE_READ bit in \fIx\fR[i].revents if it finds that \fIx\fR[i].fd
|
||||
is readable, and it sets the IOPAUSE_WRITE bit in \fIx\fR[i].revents if it finds
|
||||
that \fIx\fR[i].fd is writable. Beware that readability and writability may be
|
||||
destroyed at any moment by other processes with access to the same ofile
|
||||
that \fIx\fR[i].fd refers to.
|
||||
|
||||
If there is no readability or writability to report, iopause waits until
|
||||
\fIdeadline\fR for something to happen. iopause will return before \fIdeadline\fR if a
|
||||
descriptor becomes readable or writable, or an interrupting signal
|
||||
arrives, or some system-defined amount of time passes. iopause sets
|
||||
revents in any case.
|
||||
|
||||
You must put a current timestamp into \fIstamp\fR before calling iopause.
|
||||
.SH "IMPLEMENTATION NOTES"
|
||||
The current implementation of iopause uses the \fBpoll\fR function if that is
|
||||
available. On some systems, \fBpoll\fR needs to dynamically allocate kernel
|
||||
memory; when not much memory is available, iopause will return
|
||||
immediately, and will report (often incorrectly) that no descriptors are
|
||||
readable or writable. This is a kernel bug, and I encourage vendors to fix
|
||||
it.
|
||||
|
||||
If \fBpoll\fR is not available, iopause uses the \fBselect\fR function. This function
|
||||
cannot see descriptor numbers past a system-defined limit, typically 256
|
||||
or 1024; iopause will artificially pretend that those descriptors are
|
||||
never readable or writable.
|
||||
|
||||
Future implementations of iopause may work around these problems on some
|
||||
systems, at the expense of chewing up all available CPU time.
|
||||
|
||||
Both \fBpoll\fR and \fBselect\fR use relative timeouts rather than absolute deadlines.
|
||||
Some kernels round the timeout down to a multiple of 10 milliseconds; this
|
||||
can burn quite a bit of CPU time as the deadline approaches. iopause
|
||||
compensates for this by adding 20 milliseconds to the timeout.
|
||||
.SH "SEE ALSO"
|
||||
select(2), poll(3), taia_now(3)
|
||||
Loading…
Reference in New Issue