Completely revamp the grab source code

Some of the (many) few changes are:
- Multithreading for significantly faster performance
- The -p/--predicate flag
- Byte offsets as the default
- No customizable colors (maybe this will come back later)
- Newer edition of mlib (formerly librune)

11 files changed, 0 insertions, 574 deletions

diff --git a/vendor/librune/man/Lb-desc.tmac b/vendor/librune/man/Lb-desc.tmac
deleted file mode 100644
index 1ec8f8f..0000000
--- a/vendor/librune/man/Lb-desc.tmac
+++ /dev/null
@@ -1 +0,0 @@
-.ds doc-str-Lb-librune Unicode- and UTF-8 Library (librune, \-lrune)
diff --git a/vendor/librune/man/rtou8.3 b/vendor/librune/man/rtou8.3
deleted file mode 100644
index a83d3e8..0000000
--- a/vendor/librune/man/rtou8.3
+++ /dev/null
@@ -1 +0,0 @@
-.so u8set.3
diff --git a/vendor/librune/man/u8glen.3 b/vendor/librune/man/u8glen.3
deleted file mode 100644
index dfe0283..0000000
--- a/vendor/librune/man/u8glen.3
+++ /dev/null
@@ -1,62 +0,0 @@
-.Dd January 15 2024
-.Dt U8GLEN 3
-.Os
-.Sh NAME
-.Nm u8glen
-.Nd count Unicode graphemes
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In gbrk.h
-.Ft size_t
-.Fn u8glen "const char8_t *s" "size_t n"
-.Sh DESCRIPTION
-The
-.Fn u8glen
-function returns the number of UTF-8 encoded Unicode graphemes in the
-buffer
-.Fa s
-of length
-.Fa n
-bytes.
-.Pp
-This function assumes that
-.Fa s
-contains only valid UTF-8.
-.Sh RETURN VALUES
-The
-.Fn u8glen
-function returns the number of graphemes in the buffer
-.Fa s .
-.Sh EXAMPLES
-The following call to
-.Fn u8glen
-will return 6 while the call to
-.Fn u8len
-will return 7 as a result of user-preceived characters such as
-.Sq е́
-taking up multiple codepoints.
-.Bd -literal -offset indent
-char8_t s[] = u8\(dqПриве́т\(dq;
-size_t cplen, glen;
-
-cplen = u8len(s, sizeof(s) - 1);
-glen = u8glen(s, sizeof(s) - 1);
-.Ed
-.Sh SEE ALSO
-.Xr u8len 3 ,
-.Xr u8wdth 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Pp
-.Lk https://www.unicode.org/versions/Unicode15.1.0/ \
-"The Unicode\(rg Standard Version 15.1.0"
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
diff --git a/vendor/librune/man/u8gnext.3 b/vendor/librune/man/u8gnext.3
deleted file mode 100644
index e50c250..0000000
--- a/vendor/librune/man/u8gnext.3
+++ /dev/null
@@ -1,69 +0,0 @@
-.Dd January 27 2024
-.Dt U8GNEXT 3
-.Os
-.Sh NAME
-.Nm u8gnext ,
-.Nd iterate over Unicode codepoints
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In gbrk.h
-.Ft size_t
-.Fn u8gnext "struct u8view *v" "const char8_t **s" "size_t *n"
-.Sh DESCRIPTION
-The
-.Fn u8gnext
-function stores a view of the first grapheme in the buffer
-.Fa s
-of length
-.Fa n
-in the structure pointed to by
-.Fa v .
-It then updates
-.Fa s
-to point to the next grapheme in the buffer and also updates
-.Fa n
-accordingly.
-.Pp
-The
-.Vt "struct u8view"
-type is described in the
-.Xr u8view 3
-manual.
-.Sh RETURN VALUES
-The
-.Fn u8gnext
-function returns the length of the grapheme iterated over in bytes,
-or 0 at the end of iteration.
-.Sh EXAMPLES
-The following calls to
-.Fn u8gnext
-iterate over and print all the graphemes in
-.Va s .
-.Bd -literal -offset indent
-#define STRING u8"नमस्कार विश्व"
-
-struct u8view v;
-const char8_t *s = STRING;
-size_t n = sizeof(STRING) - 1;
-
-while (u8gnext(&v, &s, &n))
-	printf("‘%.*s’\en", (int)g.len, g.p);
-.Ed
-.Sh SEE ALSO
-.Xr u8next 3 ,
-.Xr u8view 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Pp
-.Lk https://www.unicode.org/versions/Unicode15.1.0/ \
-"The Unicode\(rg Standard Version 15.1.0"
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
diff --git a/vendor/librune/man/u8len.3 b/vendor/librune/man/u8len.3
deleted file mode 100644
index 4e58e14..0000000
--- a/vendor/librune/man/u8len.3
+++ /dev/null
@@ -1,70 +0,0 @@
-.Dd January 15 2024
-.Dt U8LEN 3
-.Os
-.Sh NAME
-.Nm u8len
-.Nd count Unicode codepoints
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In utf8.h
-.Ft size_t
-.Fn u8len "const char8_t *s" "size_t n"
-.Sh DESCRIPTION
-The
-.Fn u8len
-function returns the number of UTF-8 encoded Unicode codepoints in the
-buffer
-.Fa s
-of length
-.Fa n
-bytes.
-.Pp
-This function assumes that
-.Fa s
-contains only valid UTF-8.
-.Sh RETURN VALUES
-The
-.Fn u8len
-function returns the number of codepoints in the buffer
-.Fa s .
-.Sh EXAMPLES
-The following call to
-.Fn u8len
-will return 17 while the call to
-.Fn strlen
-will return 22 as a result of use of multibyte-characters in
-.Fa s .
-.Bd -literal -offset indent
-char8_t s[] = u8\(dq„Der Große Duden“\(dq;
-size_t blen, cplen;
-
-blen = strlen((char *)s);
-cplen = u8len(s, sizeof(s) - 1);
-.Ed
-.Sh SEE ALSO
-.Xr u8glen 3 ,
-.Xr u8wdth 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
-.Sh CAVEATS
-The return value of
-.Fn u8len
-does not necessarily represent the number of human-preceived characters
-in the given buffer;
-multiple codepoints may combine to form one human-preceived character
-that spans a single column.
-To count user-preceived codepoints
-.Pq also known as graphemes ,
-you may want to use the
-.Xr u8glen 3
-function.
diff --git a/vendor/librune/man/u8next.3 b/vendor/librune/man/u8next.3
deleted file mode 100644
index eabf2a2..0000000
--- a/vendor/librune/man/u8next.3
+++ /dev/null
@@ -1,107 +0,0 @@
-.Dd January 27 2024
-.Dt U8NEXT 3
-.Os
-.Sh NAME
-.Nm u8next ,
-.Nm u8prev
-.Nd iterate over Unicode codepoints
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In utf8.h
-.Ft int
-.Fn u8next "rune *ch" "const char8_t **s" "size_t *n"
-.Ft int
-.Fn u8prev "rune *ch" "const char8_t **s" "const char8_t *start"
-.Sh DESCRIPTION
-The
-.Fn u8next
-function decodes the first rune in the UTF-8 encoded string pointed to by
-.Fa s
-of length
-.Fa n
-and stores the result in
-.Fa ch .
-It then updates
-.Fa s
-to point to the next codepoint in the buffer and updates the length
-.Fa n
-accordingly.
-.Pp
-The
-.Fn u8prev
-function takes a pointer
-.Fa start
-which points to the start of the string instead of a length,
-and updates
-.Fa s
-to point to the previous codepoint in the buffer.
-The rune
-.Fa ch
-is set to UTF-8 codepoint pointed to by
-.Fa s
-after iteration.
-.Pp
-Both of these functions assume the input is valid UTF-8.
-.Sh RETURN VALUES
-The
-.Fn u8next
-and
-.Fn u8prev
-functions return the length of the UTF-8-encoded rune iterated over in
-bytes,
-or 0 at the end of iteration.
-.Sh EXAMPLES
-The following calls to
-.Fn u8next
-iterate over and print all the codepoints in
-.Va s .
-.Bd -literal -offset indent
-#include <rune.h> /* For PRIXRUNE; see rune(3) */
-
-#define STRING u8"Ta’ Ħaġrat"
-
-int w;
-rune ch;
-const char8_t *s = STRING;
-size_t n = sizeof(STRING) - 1;
-
-while (w = u8next(&ch, &s, &n))
-	printf("U+%04" PRIXRUNE ": ‘%.*s’\en", ch, w, s - w);
-.Ed
-.Pp
-The following example is the same as the previous,
-but it uses the
-.Fn u8prev
-function to iterate backwards.
-.Bd -literal -offset indent
-#include <rune.h> /* For PRIXRUNE; see rune(3) */
-
-#define STRING u8"Ta’ Ħaġrat"
-
-int w;
-rune ch;
-const char8_t *s, *start;
-size_t n = sizeof(STRING) - 1;
-
-start = STRING;
-s = start + n;
-
-while (w = u8prev(&ch, &s, start))
-	printf("U+%04" PRIXRUNE ": ‘%.*s’\en", ch, w, s);
-.Ed
-.Sh SEE ALSO
-.Xr rune 3 ,
-.Xr u8gnext 3 ,
-.Xr u8tor 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
diff --git a/vendor/librune/man/u8prev.3 b/vendor/librune/man/u8prev.3
deleted file mode 100644
index cf1364e..0000000
--- a/vendor/librune/man/u8prev.3
+++ /dev/null
@@ -1 +0,0 @@
-.so u8next
diff --git a/vendor/librune/man/u8set.3 b/vendor/librune/man/u8set.3
deleted file mode 100644
index d579b0b..0000000
--- a/vendor/librune/man/u8set.3
+++ /dev/null
@@ -1,103 +0,0 @@
-.Dd January 27 2024
-.Dt U8SET 3
-.Os
-.Sh NAME
-.Nm rtou8 ,
-.Nm u8set
-.Nd encode a rune to UTF-8
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In utf8.h
-.Ft int
-.Fn rtou8 "char8_t *s" "rune ch" "size_t n"
-.Ft size_t
-.Fn u8set "char8_t *s" "rune ch" "size_t n"
-.Sh DESCRIPTION
-The
-.Fn rtou8
-function writes the rune
-.Fa ch
-to the UTF-8 encoded buffer
-.Fa s
-of length
-.Fa n ,
-returning the number of bytes required to UTF-8 encode
-.Fa ch .
-.Pp
-The
-.Fn u8set
-function fills the buffer
-.Fa s
-of length
-.Fa n
-with the constant rune
-.Fa ch .
-It is similar to the
-.Fn rtou8
-function,
-but writes more than 1 rune if the given buffer has the capacity.
-Unlike
-.Fn rtou8 ,
-this function returns the number of bytes that were successfully written
-to
-.Fa s .
-If
-.Fa n
-is a multiple of
-.Fn u8wdth ch
-the return value will be equal to
-.Fa n ,
-however in the case that
-.Fa n
-is not a multiple then
-.Fa s
-is filled as much as possible,
-and a count shorter than
-.Fa n
-is returned.
-.Pp
-Both of these functions assume the input is valid UTF-8.
-.Sh RETURN VALUES
-The
-.Fn rtou8
-function returns the number of bytes required to write
-.Fa ch
-to the buffer
-.Fa s .
-.Pp
-The
-.Fn u8set
-function returns the number of bytes written to the buffer
-.Fa s .
-.Sh EXAMPLES
-The following calls to
-.Fn rtou8
-and
-.Fn u8set
-fill a buffer with box-drawing characters to create a top-row of a box.
-.Bd -literal -offset indent
-#define SCREEN_WIDTH 80
-
-int bdr_wdth = u8wdth(U'─'); /* box-drawing rune width */
-size_t bufsiz = SCREEN_WIDTH * bdr_wdth;
-char8_t *s = malloc(bufsiz);
-
-rtou8(s, U'┌', bdr_wdth);
-u8set(s + bdr_wdth, U'─', bufsiz - bdr_wdth * 2);
-rtou8(s + bufsiz - bdr_wdth, U'┐', bdr_wdth);
-.Ed
-.Sh SEE ALSO
-.Xr u8tor 3 ,
-.Xr u8tor_uc 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
diff --git a/vendor/librune/man/u8tor.3 b/vendor/librune/man/u8tor.3
deleted file mode 100644
index 147f7c1..0000000
--- a/vendor/librune/man/u8tor.3
+++ /dev/null
@@ -1,90 +0,0 @@
-.Dd January 18 2024
-.Dt U8TOR 3
-.Os
-.Sh NAME
-.Nm u8tor ,
-.Nm u8tor_uc
-.Nd decode UTF-8 into a rune
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In utf8.h
-.Ft int
-.Fn u8tor "rune *ch" "const char8_t *s"
-.Ft int
-.Fn u8tor_uc "rune *ch" "const char8_t *s"
-.Sh DESCRIPTION
-The
-.Fn u8tor
-and
-.Fn u8tor_uc
-functions decode the first rune in the UTF-8 buffer
-.Fa s ,
-storing the result in the rune pointed to by
-.Fa ch .
-Both functions return the number of bytes which compose the decoded
-UTF-8.
-.Pp
-The two functions are nearly identical,
-however
-.Fn u8tor_uc
-performs fewer range checks than
-.Fn u8tor
-allowing it to process data more efficiently.
-When provided with invalid UTF-8 however,
-.Fn u8tor_uc
-engages in undefined-behavior.
-The
-.Fn u8tor
-function on the other hand handles invalid UTF-8 by storing
-.Dv RUNE_ERROR
-in
-.Fa ch
-and returning 1.
-.Sh RETURN VALUES
-The
-.Fn u8tor
-and
-.Fn u8tor_uc
-functions return the number of bytes from
-.Fa s
-decoded into
-.Fa ch .
-.Pp
-The
-.Fn u8tor
-function returns 1 on invalid UTF-8.
-.Sh EXAMPLES
-The following call to
-.Fn u8tor
-attempts to decode the first UTF-8 codepoint in
-.Va buf .
-.Bd -literal -offset indent
-/* Implementation of read_codepoint() omitted */
-
-int w;
-rune ch;
-char8_t *buf = read_codepoint(stdin);
-
-w = u8tor(&ch, buf);
-if (ch == RUNE_ERROR) {
-	fputs("Got invalid UTF-8 codepoint", stderr);
-	exit(EXIT_FAILURE);
-}
-printf("Got rune ‘%.*s’\en", w, buf);
-.Ed
-.Sh SEE ALSO
-.Xr rtou8 3 ,
-.Xr u8chk 3 ,
-.Xr u8next 3 ,
-.Xr unicode 7 ,
-.Xr utf\-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com
diff --git a/vendor/librune/man/u8tor_uc.3 b/vendor/librune/man/u8tor_uc.3
deleted file mode 100644
index 1527e52..0000000
--- a/vendor/librune/man/u8tor_uc.3
+++ /dev/null
@@ -1 +0,0 @@
-.so u8tor.3
diff --git a/vendor/librune/man/u8wdth.3 b/vendor/librune/man/u8wdth.3
deleted file mode 100644
index 60fcada..0000000
--- a/vendor/librune/man/u8wdth.3
+++ /dev/null
@@ -1,69 +0,0 @@
-.Dd January 16 2024
-.Dt U8WDTH 3
-.Os
-.Sh NAME
-.Nm u8wdth
-.Nd Unicode codepoint width
-.Sh LIBRARY
-.Lb librune
-.Sh SYNOPSIS
-.In utf8.h
-.Ft int
-.Fn u8wdth "rune ch"
-.Sh DESCRIPTION
-The
-.Fn u8wdth
-function returns the number of bytes that would be occupied by the
-Unicode-codepoint
-.Fa ch
-if it was encoded as UTF-8.
-If
-.Fa ch
-is greater than
-.Dv RUNE_MAX ,
-a width of 0 is returned.
-.Pp
-If the exact UTF-8 encoded size of a codepoint is not relevant and you
-simply wish to allocate a buffer capable of holding a given number of
-UTF-8 codepoints,
-the
-.Dv U8_LEN_MAX
-macro may be preferable.
-.Pp
-This function treats invalid codepoints smaller than
-.Dv RUNE_MAX
-such as UTF-16 surrogates as valid.
-.Sh RETURN VALUES
-The
-.Fn u8wdth
-function returns the number of bytes required to UTF-8 encode the
-codepoint
-.Fa ch .
-.Sh EXAMPLES
-The following example allocates a buffer which is exactly large enough to
-hold the given UTF-32 string once it is converted to UTF-8.
-.Bd -literal -offset indent
-#define lengthof(a) (sizeof(a) / sizeof(*(a)))
-
-size_t bufsiz = 0;
-char8_t *buf;
-char32_t s[] = U\(dqIJsselmeer\(dq; /* ‘IJ’ takes 2 bytes */
-
-for (size_t i = 0; i < lengthof(s) - 1; i++)
-	bufsiz += u8wdth(s[i]);
-buf = malloc(bufsiz);
-.Ed
-.Sh SEE ALSO
-.Xr u8glen 3 ,
-.Xr u8len 3 ,
-.Xr unicode 7 ,
-.Xr utf-8 7
-.Sh STANDARDS
-.Rs
-.%A F. Yergeau
-.%D November 2003
-.%R RFC 3629
-.%T UTF-8, a transformation format of ISO 10646
-.Re
-.Sh AUTHORS
-.An Thomas Voss Aq Mt mail@thomasvoss.com