restructure as a proper C90 project; add makefiles

.gitignore

@@ -1,4 +1,4 @@
 .claude/
 .grok/
 .idea/
-cmake-build-debug/
+build/

BUILD.BAT

@@ -0,0 +1,32 @@
+@ECHO OFF
+REM Build script for cnotes - Turbo C++ 3.0 on DOS/Win32
+REM Run this if you don't have MAKE available
+REM
+REM Assumes TCC.EXE is in your PATH
+
+ECHO Building cnotes with Turbo C++ 3.0...
+ECHO.
+
+REM Create build directory if it doesn't exist
+IF NOT EXIST build MKDIR build
+
+ECHO Compiling addnote.exe...
+TCC -A -w -ml -I.\include -ebuild\addnote.exe src\addnote.c
+IF ERRORLEVEL 1 GOTO ERROR
+
+ECHO Compiling dumpnotes.exe...
+TCC -A -w -ml -I.\include -ebuild\dumpnotes.exe src\dumpnotes.c
+IF ERRORLEVEL 1 GOTO ERROR
+
+ECHO.
+ECHO Build successful!
+ECHO.
+DIR build\*.EXE
+GOTO END
+
+:ERROR
+ECHO.
+ECHO Build failed!
+GOTO END
+
+:END

MAKEFILE.TC

@@ -0,0 +1,40 @@
+# Makefile for cnotes - Turbo C++ 3.0 on DOS/Win32
+# Strict C89/ANSI compliant build
+#
+# Usage from DOS/Windows command line:
+#   make -f makefile.tc
+#
+# Or rename to MAKEFILE and run:
+#   make
+#
+# Turbo C++ 3.0 should be in PATH, or adjust CC path below.
+
+CC = tcc
+CFLAGS = -A -w -ml -I.\include
+# -A    = ANSI keywords only
+# -w    = Enable all warnings
+# -ml   = Large memory model (for DOS)
+# -I    = Include path
+
+SRCDIR = src
+INCDIR = include
+BUILDDIR = build
+
+.c.obj:
+	$(CC) $(CFLAGS) -c -o$*.obj $<
+
+all: $(BUILDDIR) $(BUILDDIR)\addnote.exe $(BUILDDIR)\dumpnotes.exe
+
+$(BUILDDIR):
+	if not exist $(BUILDDIR) mkdir $(BUILDDIR)
+
+$(BUILDDIR)\addnote.exe: $(SRCDIR)\addnote.c $(INCDIR)\platform.h
+	$(CC) $(CFLAGS) -e$(BUILDDIR)\addnote.exe $(SRCDIR)\addnote.c
+
+$(BUILDDIR)\dumpnotes.exe: $(SRCDIR)\dumpnotes.c $(INCDIR)\platform.h
+	$(CC) $(CFLAGS) -e$(BUILDDIR)\dumpnotes.exe $(SRCDIR)\dumpnotes.c
+
+clean:
+	if exist $(BUILDDIR)\*.exe del $(BUILDDIR)\*.exe
+	if exist $(BUILDDIR)\*.obj del $(BUILDDIR)\*.obj
+	if exist $(BUILDDIR) rmdir $(BUILDDIR)

Makefile

@@ -0,0 +1,39 @@
+# Makefile for cnotes - GCC on Linux/Unix/macOS
+# Strict C89/ANSI compliant build
+
+CC = gcc
+CFLAGS = -ansi -pedantic -Wall -Wextra -O2
+INCLUDES = -I include
+
+SRCDIR = src
+INCDIR = include
+BUILDDIR = build
+
+SOURCES = $(SRCDIR)/addnote.c $(SRCDIR)/dumpnotes.c
+HEADERS = $(INCDIR)/platform.h
+
+TARGETS = $(BUILDDIR)/addnote $(BUILDDIR)/dumpnotes
+
+.PHONY: all clean install uninstall
+
+all: $(BUILDDIR) $(TARGETS)
+
+$(BUILDDIR):
+	mkdir -p $(BUILDDIR)
+
+$(BUILDDIR)/addnote: $(SRCDIR)/addnote.c $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) -o $@ $(SRCDIR)/addnote.c
+
+$(BUILDDIR)/dumpnotes: $(SRCDIR)/dumpnotes.c $(HEADERS)
+	$(CC) $(CFLAGS) $(INCLUDES) -o $@ $(SRCDIR)/dumpnotes.c
+
+clean:
+	rm -rf $(BUILDDIR)
+
+# Install to /usr/local/bin (optional, run with sudo)
+install: $(TARGETS)
+	install -m 755 $(BUILDDIR)/addnote /usr/local/bin/
+	install -m 755 $(BUILDDIR)/dumpnotes /usr/local/bin/
+
+uninstall:
+	rm -f /usr/local/bin/addnote /usr/local/bin/dumpnotes

src/addnote.c

@@ -3,7 +3,6 @@
 #include <string.h>
 #include <time.h>
 #include <sys/stat.h>
-#include <sys/types.h>
 
 #include "platform.h"
 
@@ -38,9 +37,9 @@ int get_cnotes_path(char *buffer, size_t bufsize) {
     const char *home;
     size_t len;
     
-    home = getenv("HOME");
+    home = getenv(HOME_ENV);
     if (home == NULL) {
-        fprintf(stderr, "Error: HOME environment variable not set\n");
+        fprintf(stderr, "Error: %s environment variable not set\n", HOME_ENV);
         return 0;
     }
     
@@ -51,7 +50,7 @@ int get_cnotes_path(char *buffer, size_t bufsize) {
         return 0;
     }
     
-    sprintf(buffer, "%s/%s", home, CNOTES_DIR);
+    sprintf(buffer, "%s" PATH_SEP_STR "%s", home, CNOTES_DIR);
     return 1;
 }
 
@@ -109,7 +108,7 @@ int write_entry(const char *category, const char *message) {
     }
     
     /* Build full file path */
-    sprintf(file_path, "%s/%s", dir_path, CNOTES_FILE);
+    sprintf(file_path, "%s" PATH_SEP_STR "%s", dir_path, CNOTES_FILE);
     
     /* Open file in append mode */
     file = fopen(file_path, "a");

src/dumpnotes.c

@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include "platform.h"
 
 #define MAX_LENGTH 500 /* Allow fgets to read up to this many characters */
 #define DATE_LENGTH 10 /* YYYY-MM-DD */
@@ -101,7 +102,7 @@ void print_entry(const Entry *entry) {
 
 /* Parse a fixed-length field followed by a delimiter */
 static const char *parse_fixed_field(const char *ptr, char *dest, int length, char delimiter) {
-    if (strlen(ptr) < length) return NULL;
+    if ((int)strlen(ptr) < length) return NULL;
     strncpy(dest, ptr, length);
     dest[length] = '\0';
     ptr += length;
@@ -152,9 +153,9 @@ int get_cnotes_path(char *buffer, size_t bufsize) {
     const char *home;
     size_t len;
 
-    home = getenv("HOME");
+    home = getenv(HOME_ENV);
     if (home == NULL) {
-        fprintf(stderr, "Error: HOME environment variable not set\n");
+        fprintf(stderr, "Error: %s environment variable not set\n", HOME_ENV);
         return 0;
     }
 
@@ -165,20 +166,27 @@ int get_cnotes_path(char *buffer, size_t bufsize) {
         return 0;
     }
 
-    sprintf(buffer, "%s/%s/%s", home, CNOTES_DIR, CNOTES_FILE);
+    sprintf(buffer, "%s" PATH_SEP_STR "%s" PATH_SEP_STR "%s", home, CNOTES_DIR, CNOTES_FILE);
     return 1;
 }
 
 /* start with a simple cat of the file */
 int main(int argc, char *argv[]) {
+    int i;
     FILE *notesfile;
     char file_path[600];
-    Entry entries[MAX_ENTRIES];
+    Entry *entries;
     int entry_count = 0;
     char line[MAX_LENGTH +1];
-    char *filename = CNOTES_FILE;
+    char *filename = NULL;
     SortMode sort_mode = SORT_NONE;
-    int i;
+
+    /* Insures that we won't run out of memory in DOS */
+    entries = (Entry *)malloc(MAX_ENTRIES * sizeof(Entry));
+    if (entries == NULL) {
+        fprintf(stderr, "Error: Cannot allocate memory\n");
+        return 1;
+    }
 
     /* Parse command line arguments */
     for (i = 1; i < argc; i++) {
@@ -209,6 +217,9 @@ int main(int argc, char *argv[]) {
         }
     }
 
+    /* TODO: filename argument is parsed but not yet used */
+    (void)filename;
+
     /* Get cnotes file path */
     if (!get_cnotes_path(file_path, sizeof(file_path))) {
         return 1;
@@ -247,5 +258,6 @@ int main(int argc, char *argv[]) {
     }
     print_footer();
 
+    free(entries);
     return 0;
 }