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-rw-r--r--.gitignore2
-rw-r--r--COPYING661
-rw-r--r--Makefile40
-rw-r--r--PKGBUILD19
-rw-r--r--README.md19
-rw-r--r--changelog.md3
-rw-r--r--include/u8c/dbgprint.h25
-rw-r--r--include/u8c/debug.h25
-rw-r--r--include/u8c/fmttyp.h24
-rw-r--r--include/u8c/free.h20
-rw-r--r--include/u8c/print.h20
-rw-r--r--include/u8c/u8dec.h21
-rw-r--r--include/u8c/u8enc.h21
-rw-r--r--src/u8c/free.c22
-rw-r--r--src/u8c/print.c96
-rw-r--r--src/u8c/u8dec.c95
-rw-r--r--src/u8c/u8enc.c82
17 files changed, 1195 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9d22eb4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.o
+*.so
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..be3f7b2
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,661 @@
+ GNU AFFERO GENERAL PUBLIC LICENSE
+ Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
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+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
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+share and change all versions of a program--to make sure it remains free
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+ When we speak of free software, we are referring to freedom, not
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+ Developers that use our General Public Licenses protect your rights
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+ A secondary benefit of defending all users' freedom is that
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+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..44c3956
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,40 @@
+CC = clang
+CFLAGS = -std=c17 -Wall -Wextra -Wpedantic -fPIC -Iinclude -march=native -mtune=native -O3
+ifneq ($(debug),1)
+CFLAGS += -DNDEBUG
+else
+CFLAGS += -g
+endif
+LDFLAGS = -shared
+SRCS = \
+ src/u8c/free.c \
+ src/u8c/print.c \
+ src/u8c/u8dec.c \
+ src/u8c/u8enc.c
+HDRS = \
+ include/u8c/fmttyp.h \
+ include/u8c/free.h \
+ include/u8c/print.h \
+ include/u8c/u8dec.h \
+ include/u8c/u8enc.h
+OBJS = $(SRCS:.c=.o)
+LIB = u8c.so
+$(LIB): $(OBJS)
+ $(CC) $(LDFLAGS) $^ -o $@
+$(OBJS): $(HDRS)
+.PHONY: clean
+clean:
+ rm $(OBJS)
+.PHONY: purge
+purge:
+ rm $(LIB) $(OBJS)
+.PHONY: install
+install: $(LIB)
+ mkdir --parents $(DESTDIR)/include/u8c
+ mkdir --parents $(DESTDIR)/lib
+ install --mode=444 $(HDRS) $(DESTDIR)/include/u8c
+ install --mode=555 $(LIB) $(DESTDIR)/lib
+.PHONY: uninstall
+uninstall:
+ rm --force --recursive $(DESTDIR)/include/u8c/
+ rm --force --recursive $(DESTDIR)/lib/$(LIB)
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 0000000..9bee93d
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,19 @@
+# Maintainer: Gabriel Jensen
+pkgname=u8c
+pkgver=0.0.0
+pkgrel=1
+pkgdesc="C library for encoding, decoding, and printing UTF-8 bytes."
+arch=("any")
+url="https://mandelbrot.dk/delta/u8c"
+license=("AGPL3")
+makedepends=("git")
+source=("git+https://mandelbrot.dk/delta/u8c.git")
+sha512sums=("SKIP")
+build() {
+ cd "$srcdir/$pkgname"
+ make -j$(nproc)
+}
+package() {
+ cd "$srcdir/$pkgname"
+ make DESTDIR="$pkgdir/usr" install
+}
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e494f00
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# u8c
+
+[*u8c*](https://mandelbrot.dk/delta/u8c) is a free and open-source C-based library for transforming Unicode codepoints to and from UTF-8 bytes.
+
+## Copyright & License
+
+Copyright 2021 Gabriel Jensen.
+
+All rights reserved.
+
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License along with this program.
+
+If not, see <https://www.gnu.org/licenses/>.
diff --git a/changelog.md b/changelog.md
new file mode 100644
index 0000000..263df7e
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,3 @@
+# 0
+
+* Fork from *luma*.
diff --git a/include/u8c/dbgprint.h b/include/u8c/dbgprint.h
new file mode 100644
index 0000000..3f4afaf
--- /dev/null
+++ b/include/u8c/dbgprint.h
@@ -0,0 +1,25 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_dbgprint)
+# define u8c_sym_dbgprint
+# if defined(NDEBUG)
+# define u8c_dbgprint(...)
+# else
+# include <u8c/print.h>
+# include <stdint.h>
+# define u8c_dbgprint(...) { u8c_print(__VA_ARGS__); }
+# endif
+# endif
diff --git a/include/u8c/debug.h b/include/u8c/debug.h
new file mode 100644
index 0000000..38c00b0
--- /dev/null
+++ b/include/u8c/debug.h
@@ -0,0 +1,25 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_debug)
+# define u8c_sym_debug
+# include <stdint.h>
+uint_least8_t const inline u8c_debug =
+# if defined(NDEBUG)
+ 0x0;
+# else
+ 0x1;
+# endif
+# endif
diff --git a/include/u8c/fmttyp.h b/include/u8c/fmttyp.h
new file mode 100644
index 0000000..b2d79ea
--- /dev/null
+++ b/include/u8c/fmttyp.h
@@ -0,0 +1,24 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_fmttyp)
+# define u8c_sym_fmttyp
+enum u8c_fmttyp {
+ u8c_fmttyp_chr,
+ u8c_fmttyp_int,
+ u8c_fmttyp_str,
+ u8c_fmttyp_uint,
+};
+# endif
diff --git a/include/u8c/free.h b/include/u8c/free.h
new file mode 100644
index 0000000..573089e
--- /dev/null
+++ b/include/u8c/free.h
@@ -0,0 +1,20 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_free)
+# define u8c_sym_free
+# include <stdint.h>
+extern uint_least8_t u8c_free(void * ptr);
+# endif
diff --git a/include/u8c/print.h b/include/u8c/print.h
new file mode 100644
index 0000000..0e52cf1
--- /dev/null
+++ b/include/u8c/print.h
@@ -0,0 +1,20 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_print)
+# define u8c_sym_print
+# include <stdint.h>
+extern uint_least8_t u8c_print(uint_least32_t * str,...);
+# endif
diff --git a/include/u8c/u8dec.h b/include/u8c/u8dec.h
new file mode 100644
index 0000000..07c0e27
--- /dev/null
+++ b/include/u8c/u8dec.h
@@ -0,0 +1,21 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_u8dec)
+# define u8c_sym_u8dec
+# include <stddef.h>
+# include <stdint.h>
+extern uint_least8_t u8c_u8dec(uint_least8_t * utf,size_t * codepssz,uint_least32_t * * codeps);
+# endif
diff --git a/include/u8c/u8enc.h b/include/u8c/u8enc.h
new file mode 100644
index 0000000..6083c2a
--- /dev/null
+++ b/include/u8c/u8enc.h
@@ -0,0 +1,21 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# if !defined(u8c_sym_u8enc)
+# define u8c_sym_u8enc
+# include <stddef.h>
+# include <stdint.h>
+extern uint_least8_t u8c_u8enc(uint_least32_t * codeps,size_t * utfsz,uint_least8_t * * utf);
+# endif
diff --git a/src/u8c/free.c b/src/u8c/free.c
new file mode 100644
index 0000000..f58f667
--- /dev/null
+++ b/src/u8c/free.c
@@ -0,0 +1,22 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# include <u8c/free.h>
+# include <stdint.h>
+# include <stdlib.h>
+uint_least8_t u8c_free(void * ptr) {
+ free(ptr);
+ return 0x0;
+}
diff --git a/src/u8c/print.c b/src/u8c/print.c
new file mode 100644
index 0000000..741d25a
--- /dev/null
+++ b/src/u8c/print.c
@@ -0,0 +1,96 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# include <u8c/fmttyp.h>
+# include <u8c/u8enc.h>
+# include <stdarg.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <stdlib.h>
+uint_least8_t u8c_print(uint_least32_t * msg,...) {
+ va_list args;
+ va_start(args,msg);
+ for(size_t n = (size_t){0x0};;n += (size_t){0x1}) {
+ if(msg[n] == (uint_least32_t){0x0}) {
+ fwrite(&(uint_least8_t){0xA},(size_t){0x1},(size_t){0x1},stdout);
+ break;
+ }
+ if(msg[n] == (uint_least32_t){0xFFFD}) {
+ enum u8c_fmttyp fmttyp = va_arg(args,enum u8c_fmttyp);
+ switch(fmttyp) {
+ case u8c_fmttyp_chr:
+ {
+ uint_least32_t const chr = va_arg(args,uint_least32_t);
+ if(chr == (uint_least32_t){0x0}) {
+ continue;
+ }
+ size_t strsz = (size_t){0x0};
+ uint_least8_t * str = NULL;
+ u8c_u8enc((uint_least32_t[]){chr,0x0},&strsz,&str);
+ fwrite(str,(size_t){0x1},strsz - (size_t){0x1},stdout);
+ free(str);
+ break;
+ }
+ case u8c_fmttyp_int:
+ {
+ int_least64_t n = va_arg(args,int_least64_t);
+ if(n < 0x0) {
+ size_t chrsz = (size_t){0x0};
+ uint_least8_t * chr = NULL;
+ u8c_u8enc((uint_least32_t[]){0x2212,0x0},&chrsz,&chr);
+ fwrite(chr,(size_t){0x1},chrsz - (size_t){0x1},stdout);
+ free(chr);
+ }
+ for(;n != 0x0;n /= (int_least64_t){0xB}) {
+
+ }
+ break;
+ }
+ case u8c_fmttyp_str:
+ {
+ size_t strsz = (size_t){0x0};
+ uint_least8_t * str = NULL;
+ u8c_u8enc(va_arg(args,uint_least32_t *),&strsz,&str);
+ fwrite(str,(size_t){0x1},strsz - (size_t){0x1},stdout);
+ free((void *)str);
+ break;
+ }
+ case u8c_fmttyp_uint:
+ {
+ break;
+ }
+ }
+ continue;
+ }
+ size_t chrsz = (size_t){0x0};
+ uint_least8_t * chr = NULL;
+ u8c_u8enc((uint_least32_t[]){msg[n],0x0,0x0},&chrsz,&chr);
+ fwrite(chr,(size_t){0x1},chrsz - (size_t){0x1},stdout);
+ free((void *)chr);
+ }
+ va_end(args);
+ return 0x0;
+}
+/*
+ #######################
+ # #
+ # ## ## ### # # ### #
+ # # # # # # ### # #
+ # ## ## # ### # #
+ # # # # # ### # #
+ # # # # ### # # # #
+ # #
+ #######################
+*/
diff --git a/src/u8c/u8dec.c b/src/u8c/u8dec.c
new file mode 100644
index 0000000..60f4c3d
--- /dev/null
+++ b/src/u8c/u8dec.c
@@ -0,0 +1,95 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# include <u8c/dbgprint.h>
+# include <u8c/u8dec.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <stdlib.h>
+uint_least8_t u8c_u8dec(uint_least8_t * utf,size_t * codepssz,uint_least32_t * * codeps) {
+ size_t insz = (size_t){0x0};
+ size_t outsz = (size_t){0x0};
+ for(size_t n = (size_t){0x0};;n += (size_t){0x1}) { // First pass: get size of input array and determine size of output array.
+ outsz += (size_t){0x1};
+ if(utf[n] == (uint_least8_t){0x0}) { // Null-terminator.
+ insz = n;
+ break;
+ }
+ if(utf[n] >= (uint_least8_t){0xF0}) { // Four byte.
+ n += (size_t){0x4};
+ continue;
+ }
+ if(utf[n] >= (uint_least8_t){0xE0}) { // Three bytes.
+ n += (size_t){0x3};
+ continue;
+ }
+ if(utf[n] >= (uint_least8_t){0xC0}) { // Two bytes.
+ n += (size_t){0x2};
+ continue;
+ }
+ }
+ if(codepssz != NULL) {
+ *codepssz = outsz;
+ }
+ *codeps = malloc(outsz);
+ (*codeps)[outsz - (size_t){0x1}] = (uint_least32_t){0x0}; // Create null-terminator on output array.
+ for(size_t n = (size_t){0x0}, outn = (size_t){0x0};n < insz;n += (size_t){0x1},outn += (size_t){0x1}) { // Second pass: decode UTF-8.
+ uint_least8_t chr = utf[n];
+ if(chr >= (uint_least8_t){0xF7}) { // Out of range.
+ u8c_dbgprint(U"Out of range (in character decoding: byte too big).");
+ return 0x1;
+ }
+ if(chr >= (uint_least8_t){0xF0}) { // Four byte.
+ uint_least32_t codep = (uint_least32_t){(chr ^ 0xF0) << 0x12};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80) << 0xC};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80) << 0x6};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80)};
+ (*codeps)[outn] = codep;
+ continue;
+ }
+ if(chr >= (uint_least8_t){0xE0}) { // Three bytes.
+ uint_least32_t codep = (uint_least32_t){(chr ^ 0xE0) << 0xC};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80) << 0x6};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80)};
+ n += (size_t){0x1};
+ (*codeps)[outn] = codep;
+ continue;
+ }
+ if(chr >= (uint_least8_t){0xC0}) { // Two bytes.
+ uint_least32_t codep = (uint_least32_t){(chr ^ 0xC0) << 0x6};
+ n += (size_t){0x1};
+ chr = utf[n];
+ codep += (uint_least32_t){(chr ^ 0x80)};
+ n += (size_t){0x1};
+ (*codeps)[outn] = codep;
+ continue;
+ }
+ // One byte.
+ uint_least32_t codep = (uint_least32_t){chr};
+ (*codeps)[outn] = codep;
+ continue;
+ }
+ return 0x0;
+}
diff --git a/src/u8c/u8enc.c b/src/u8c/u8enc.c
new file mode 100644
index 0000000..3ea6cdc
--- /dev/null
+++ b/src/u8c/u8enc.c
@@ -0,0 +1,82 @@
+/*
+ Copyright 2021 Gabriel Jensen
+
+ This file is part of u8c.
+
+ u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+ u8c 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 Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License along with u8c.
+
+ If not, see <https://www.gnu.org/licenses/>.
+*/
+# include <u8c/u8enc.h>
+# include <stdint.h>
+# include <stdio.h>
+# include <stdlib.h>
+uint_least8_t u8c_u8enc(uint_least32_t * codeps,size_t * utfsz,uint_least8_t * * utf) {
+ size_t sz = (size_t){0x0}; // Size of input array (bytes).
+ size_t outsz = (size_t){0x0}; // Size of output array /bytes).
+ for(size_t n = (size_t){0x0};;n += (size_t){0x1}) { // First pass: get size of input array, and determine size of output array.
+ uint_least32_t codep = codeps[n]; // Current Unicode codepoint.
+ if(codep == (uint_least32_t){0x0}) { // U+0000 is Null.
+ sz = n;
+ break;
+ }
+ if(codep >= (uint_least32_t){0x110000}) { // Codepoint out of range.
+ return 0x1;
+ }
+ if(codep >= (uint_least32_t){0x10000}) { // 4 bytes.
+ outsz += (size_t){0x4};
+ continue;
+ }
+ if(codep >= (uint_least32_t){0x800}) { // 3 bytes.
+ outsz += (size_t){0x3};
+ continue;
+ }
+ if(codep >= (uint_least32_t){0x80}) { // 2 bytes.
+ outsz += (size_t){0x2};
+ continue;
+ }
+ // 1 byte.
+ outsz += (size_t){0x1};
+ }
+ outsz += (size_t){0x1}; // Add space for null-terminator.
+ if(utfsz != NULL) {
+ *utfsz = outsz;
+ }
+ *utf = malloc(outsz); // Allocate space for output array.
+ (*utf)[outsz - (size_t){0x1}] = (uint_least8_t){0x0}; // Create null-terminator on output array.
+ for(size_t n = (size_t){0x0}, outn = (size_t){0x0};n < sz;n += (size_t){0x1},outn += (size_t){0x1}) { // Second pass: encode each codepoint into UTF-8.
+ if(codeps[n] >= 0x10000) { // Four bytes.
+ (*utf)[outn] = (uint_least8_t){0xF0 + (codeps[n] >> 0x12)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + ((codeps[n] >> 0xC) & 0x3F)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + ((codeps[n] >> 0x6) & 0x3F)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + (codeps[n] & 0x3F)};
+ continue;
+ }
+ if(codeps[n] >= 0x800) { // Three bytes.
+ (*utf)[outn] = (uint_least8_t){0xE0 + (codeps[n] >> 0xC)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + ((codeps[n] >> 0x6) & 0x3F)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + (codeps[n] & 0x3F)};
+ continue;
+ }
+ if(codeps[n] >= 0x80) { // Two bytes.
+ (*utf)[outn] = (uint_least8_t){0xC0 + (codeps[n] >> 0x6)};
+ outn += (size_t){0x1};
+ (*utf)[outn] = (uint_least8_t){0x80 + (codeps[n] & 0x3F)};
+ continue;
+ }
+ // One byte.
+ (*utf)[outn] = codeps[n];
+ }
+ return 0x0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 03:48:32 +0100