Add memscan and memcasescan

Signed-off-by: Mattias Andrée <maandree@kth.se>

11 files changed, 181 insertions, 2 deletions

diff --git a/man3/libsimple_memcasechr.3 b/man3/libsimple_memcasechr.3
index 3934598..5c6e5d9 100644
--- a/man3/libsimple_memcasechr.3
+++ b/man3/libsimple_memcasechr.3
@@ -78,6 +78,7 @@ None.
 .BR libsimple_memrcasechr (3),
 .BR libsimple_rawmemcasechr (3),
 .BR libsimple_memcasemem (3),
+.BR libsimple_memcasescan (3),
 .BR libsimple_strncasechr (3),
 .BR libsimple_strcasechr (3),
 .BR memchr (3)
diff --git a/man3/libsimple_memcasescan.3 b/man3/libsimple_memcasescan.3
new file mode 100644
index 0000000..9c11c2e
--- /dev/null
+++ b/man3/libsimple_memcasescan.3
@@ -0,0 +1,86 @@
+.TH LIBSIMPLE_MEMCASESCAN 3 2018-11-17 libsimple
+.SH NAME
+libsimple_memcasescan \- find byte in memory
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+void *libsimple_memcasescan(const void *\fIs\fP, int \fIc\fP, size_t \fIn\fP);
+
+#ifndef memcasescan
+# define memcasescan libsimple_memcasescan
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_memcasescan ()
+function scans the memory segment
+.IR s ,
+with the size
+.IR n ,
+for the first occurence of the byte
+.I c
+(it is converted to a
+.BR char ).
+If no such character exist in the memory
+segment, the memory segment's end is returned.
+.PP
+The comparison is case-insensitive.
+.SH RETURN VALUE
+The
+.BR libsimple_memcasescan ()
+function returns the pointer
+.I s
+with a minimal offset such that
+.IR tolower(*r)==tolower(c) ,
+where
+.I r
+is the returned pointer.
+If no such offset exists,
+.I &s[n]
+is returned.
+.SH ERRORS
+The
+.BR libsimple_memcasescan ()
+function cannot fail.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_memcasescan ()
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_memcasescan ()
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_memcasescan ()
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_memscan (3),
+.BR libsimple_memcasechr (3),
+.BR libsimple_memrcasechr (3),
+.BR libsimple_rawmemcasechr (3),
+.BR libsimple_memcasemem (3),
+.BR libsimple_strncasechrnul (3),
+.BR libsimple_strcasechrnul (3)
diff --git a/man3/libsimple_memscan.3 b/man3/libsimple_memscan.3
new file mode 100644
index 0000000..c9db7da
--- /dev/null
+++ b/man3/libsimple_memscan.3
@@ -0,0 +1,84 @@
+.TH LIBSIMPLE_MEMSCAN 3 2018-11-17 libsimple
+.SH NAME
+libsimple_memscan \- find byte in memory
+.SH SYNOPSIS
+.nf
+#include <libsimple.h>
+
+void *libsimple_memscan(const void *\fIs\fP, int \fIc\fP, size_t \fIn\fP);
+
+#ifndef memscan
+# define memscan libsimple_memscan
+#endif
+.fi
+.PP
+Link with
+.IR \-lsimple .
+.SH DESCRIPTION
+The
+.BR libsimple_memscan ()
+function scans the memory segment
+.IR s ,
+with the size
+.IR n ,
+for the first occurence of the byte
+.I c
+(it is converted to a
+.BR char ).
+.PP
+The comparison is case-sensitive.
+.SH RETURN VALUE
+The
+.BR libsimple_memscan ()
+function returns the pointer
+.I s
+with a minimal offset such that
+.IR *r==c ,
+where
+.I r
+is the returned pointer.
+If no such offset exists,
+.B NULL
+is returned.
+.SH ERRORS
+The
+.BR libsimple_memscan ()
+function cannot fail.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR libsimple_memscan ()
+T}	Thread safety	MT-Safe
+T{
+.BR libsimple_memscan ()
+T}	Async-signal safety	AS-Safe
+T{
+.BR libsimple_memscan ()
+T}	Async-cancel safety	AC-Safe
+.TE
+.SH EXAMPLES
+None.
+.SH APPLICATION USAGE
+None.
+.SH RATIONALE
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH NOTES
+None.
+.SH BUGS
+None.
+.SH SEE ALSO
+.BR libsimple_memcasescan (3),
+.BR libsimple_memrchr (3),
+.BR libsimple_rawmemchr (3),
+.BR libsimple_memmem (3),
+.BR libsimple_strnchrnul (3),
+.BR libsimple_strchrnul (3),
+.BR memchr (3)
diff --git a/man3/libsimple_rawmemcasechr.3 b/man3/libsimple_rawmemcasechr.3
index 2e06898..308ea91 100644
--- a/man3/libsimple_rawmemcasechr.3
+++ b/man3/libsimple_rawmemcasechr.3
@@ -79,4 +79,5 @@ None.
 .BR libsimple_memcasechr (3),
 .BR libsimple_rawmemchr (3),
 .BR libsimple_rawmemrcasechr (3),
+.BR libsimple_memcasescan (3),
 .BR libsimple_memcasechr (3)
diff --git a/man3/libsimple_rawmemchr.3 b/man3/libsimple_rawmemchr.3
index 79b480e..3cf13dd 100644
--- a/man3/libsimple_rawmemchr.3
+++ b/man3/libsimple_rawmemchr.3
@@ -78,4 +78,5 @@ None.
 .SH SEE ALSO
 .BR libsimple_rawmemcasechr (3),
 .BR libsimple_rawmemrchr (3),
+.BR libsimple_memscan (3),
 .BR memchr (3)
diff --git a/man3/libsimple_strcasechrnul.3 b/man3/libsimple_strcasechrnul.3
index d2098bb..4f4badc 100644
--- a/man3/libsimple_strcasechrnul.3
+++ b/man3/libsimple_strcasechrnul.3
@@ -75,4 +75,5 @@ None.
 .BR libsimple_strcasechr (3),
 .BR libsimple_strchrnul (3),
 .BR libsimple_strncasechrnul (3),
+.BR libsimple_memcasescan (3),
 .BR libsimple_inchrcaseset (3)
diff --git a/man3/libsimple_strchrnul.3 b/man3/libsimple_strchrnul.3
index 2196933..846895b 100644
--- a/man3/libsimple_strchrnul.3
+++ b/man3/libsimple_strchrnul.3
@@ -75,5 +75,6 @@ None.
 .BR libsimple_strcasechrnul (3),
 .BR libsimple_strend (3),
 .BR libsimple_strnchrnul (3),
+.BR libsimple_memscan (3),
 .BR libsimple_inchrset (3),
 .BR strchr (3)
diff --git a/man3/libsimple_strncasechrnul.3 b/man3/libsimple_strncasechrnul.3
index 241b61a..ed0fa03 100644
--- a/man3/libsimple_strncasechrnul.3
+++ b/man3/libsimple_strncasechrnul.3
@@ -82,4 +82,5 @@ None.
 .SH SEE ALSO
 .BR libsimple_strncasechr (3),
 .BR libsimple_strnchrnul (3),
-.BR libsimple_strcasechrnul (3)
+.BR libsimple_strcasechrnul (3),
+.BR libsimple_memcasescan (3)
diff --git a/man3/libsimple_strnchrnul.3 b/man3/libsimple_strnchrnul.3
index ae0b994..6a26bd2 100644
--- a/man3/libsimple_strnchrnul.3
+++ b/man3/libsimple_strnchrnul.3
@@ -83,4 +83,5 @@ None. I promise!
 .BR libsimple_strncasechrnul (3),
 .BR libsimple_strnchr (3),
 .BR libsimple_strnend (3),
-.BR libsimple_strchrnul (3)
+.BR libsimple_strchrnul (3),
+.BR libsimple_memscan (3)
diff --git a/man3/memcasescan.3libsimple b/man3/memcasescan.3libsimple
new file mode 120000
index 0000000..86e265e
--- /dev/null
+++ b/man3/memcasescan.3libsimple
@@ -0,0 +1 @@
+libsimple_memcasescan.3
\ No newline at end of file
diff --git a/man3/memscan.3libsimple b/man3/memscan.3libsimple
new file mode 120000
index 0000000..41ccaab
--- /dev/null
+++ b/man3/memscan.3libsimple
@@ -0,0 +1 @@
+libsimple_memscan.3
\ No newline at end of file