Initial commit

.gitignore

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+nsh
+*.o
+*.tar.gz

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2024, Night Kaly <night@night0721.xyz>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Makefile

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+.POSIX:
+.SUFFIXES:
+
+CC = cc
+VERSION = 1.0
+TARGET = nsh
+PREFIX ?= /usr/local
+BINDIR = $(PREFIX)/bin
+
+# Flags
+CFLAGS = -O3 -march=native -mtune=native -pipe -s -std=c99 -pedantic -Wall -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600
+
+SRC = $(TARGET).c
+
+$(TARGET): $(SRC)
+	$(CC) $(SRC) -o $@ $(CFLAGS)
+
+dist:
+	mkdir -p $(TARGET)-$(VERSION)
+	cp -R README.md $(TARGET) $(TARGET)-$(VERSION)
+	tar -cf $(TARGET)-$(VERSION).tar $(TARGET)-$(VERSION)
+	gzip $(TARGET)-$(VERSION).tar
+	rm -rf $(TARGET)-$(VERSION)
+
+install: $(TARGET)
+	mkdir -p $(DESTDIR)$(BINDIR)
+	cp -p $(TARGET) $(DESTDIR)$(BINDIR)/$(TARGET)
+	chmod 755 $(DESTDIR)$(BINDIR)/$(TARGET)
+
+uninstall:
+	$(RM) $(DESTDIR)$(BINDIR)/$(TARGET)
+
+clean:
+	$(RM) $(TARGET)
+
+all: $(TARGET)
+
+.PHONY: all dist install uninstall clean

README.md

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+# nsh
+Neo Syntax Highlighter
+
+# Usage
+```sh
+git diff | nsh
+diff <x> <y> | nsh
+```
+
+# Dependencies
+None
+
+# Building
+You will need to run these with elevated privilages.
+```
+$ make 
+# make install
+```
+
+# Contributions
+Contributions are welcomed, feel free to open a pull request.
+
+# License
+This project is licensed under the BSD-3-Clause License. See [LICENSE](https://github.com/night0721/nsh/blob/master/LICENSE) for more information.

nsh.c

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+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define COLOR_RESET     "\033[0m"
+#define COLOR_TEAL		"\033[38;2;148;226;213m"
+#define COLOR_GREEN     "\033[38;2;166;227;161m"
+#define COLOR_RED       "\033[38;2;243;139;168m"
+#define COLOR_BLUE      "\033[38;2;137;180;250m"
+#define COLOR_PEACH		"\033[38;2;250;179;135m"
+#define COLOR_YELLOW    "\033[38;2;249;226;175m"
+#define COLOR_OVERLAY0  "\033[38;2;108;112;134m"
+
+#define MAX_LINE_LENGTH 1024
+
+int main()
+{
+   char buffer[MAX_LINE_LENGTH];
+
+    while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
+        /* Remove newline from buffer, if present */
+        size_t len = strlen(buffer);
+        if (len > 0 && buffer[len - 1] == '\n') {
+            buffer[len - 1] = '\0';
+        }
+
+        if (strncmp(buffer, "---", 3) == 0) {
+            printf(COLOR_YELLOW "%s" COLOR_RESET "\n", buffer);
+        } else if (strncmp(buffer, "+++", 3) == 0) {
+            printf(COLOR_PEACH "%s" COLOR_RESET "\n", buffer);
+        } else if (strncmp(buffer, "@@", 2) == 0) {
+            printf(COLOR_OVERLAY0 "%s" COLOR_RESET "\n", buffer);
+        } else if (strncmp(buffer, "index", 5) == 0) {
+            printf(COLOR_TEAL "%s" COLOR_RESET "\n", buffer);
+        } else if (strncmp(buffer, "diff", 4) == 0) {
+            printf(COLOR_BLUE "%s" COLOR_RESET "\n", buffer);
+        } else if (buffer[0] == '+') {
+            printf(COLOR_GREEN "%s" COLOR_RESET "\n", buffer);
+        } else if (buffer[0] == '-') {
+            printf(COLOR_RED "%s" COLOR_RESET "\n", buffer);
+        } else {
+            printf("%s\n", buffer);
+        }
+    }
+    return 0;
+}
+