commit cursetree

flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "devshell-cursetree";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+  };
+
+  outputs = inputs @ {
+    self,
+    nixpkgs,
+  }: let
+    defaultSystems = ["aarch64-darwin" "aarch64-linux" "i686-linux" "x86_64-darwin" "x86_64-linux"];
+
+    forAllSystems = f:
+      nixpkgs.lib.genAttrs defaultSystems (system:
+        f system (import nixpkgs {
+          inherit system;
+          overlays = builtins.attrValues self.overlays;
+        }));
+  in {
+    overlays.default = final: prev: {};
+
+    devShells = forAllSystems (
+      system: pkgs: let
+        lib = pkgs.lib;
+      in {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            gnumake
+            gcc
+
+            # Language/Development Tooling
+            clang-tools
+            bear # clang compile_commands.json
+            valgrind
+          ];
+        };
+      }
+    );
+
+    checks = self.packages;
+    packages = forAllSystems (system: pkgs: rec {
+      default = cursetree;
+      cursetree = pkgs.cursetree;
+    });
+  };
+}

src/_ct_shared.h

@@ -1,7 +1,15 @@
 #ifndef _CURSETREE__SHARED_H
 #define _CURSETREE__SHARED_H
 
+/* Standard success/failure status codes. */
 #define OK (0)
 #define ERR (1)
 
+/* Initial row and column coordinates. */
+#define ROW0 1
+#define COL0 1
+
+typedef unsigned short pos;
+typedef unsigned char glyph;
+
 #endif /* _CURSETREE__SHARED_H */

src/ansi.h

@@ -0,0 +1,6 @@
+#ifndef CURSETREE_ANSI_H
+#define CURSETREE_ANSI_H
+
+
+
+#endif /* CURSETREE_ANSI_H */

src/ct_test.c

@@ -6,22 +6,19 @@
 #include "term.h"
 
 int main(void) {
-  struct ct_term *const term = (struct ct_term *)malloc(sizeof(struct ct_term));
-  if (getterm(term)) {
-    perror("getterm");
-    endterm(term);
-    exit(1);
-  }
+  struct ct_term *const term;
+  int retv = OK;
   
+  if (stashterm(&term)) {
+    perror("saveterm");
+    exit(ERR);
+  }
   if (termsize(term)) {
     perror("termsize");
-    endterm(term);
-    exit(1);
+    retv = ERR;
+    goto end;
   }
 
-
-  printf("\e[2J\e[1;1H");
-  
   char *line = (char *)malloc(sizeof(char) * (term->cols + 1));
   memset(line, 'X', term->cols);
   line[term->cols] = '\0';
@@ -29,8 +26,10 @@ int main(void) {
   for (int i=0; i < term->rows; i++) {
     printf("%s", line);
   }
+  printf("\n");
   sleep(3);
 
-  endterm(term);
+end:
+  resetterm(term);
   return 0;
 }

src/surface.c

@@ -4,23 +4,23 @@
 #include "_ct_shared.h"
 #include "surface.h"
 
-#define ALLOC_ROW(w) ((char *)calloc(w, sizeof(char)))
+#define ALLOC_COLS(w) ((glyph *)calloc(w, sizeof(glyph)))
 
 /* Allocates a new 2D surface buffer with ROWS=h, COLS=w.
  * Returns NULL on failure and sets errno, otherwise
  * a pointer to the new buffer is returned.
  */
-static inline __attribute__((malloc, warn_unused_result)) char **
+static inline __attribute__((malloc, warn_unused_result)) glyph **
 sfbuf(const pos w, const pos h) {
-  char **buf;
+  glyph **buf;
   pos i;
 
-  buf = (char **)malloc(sizeof(char *) * h);
+  buf = (glyph **)malloc(sizeof(glyph *) * h);
   if (buf == NULL)
     return buf;
 
   for (i = 0; i < w; i++) {
-    buf[i] = ALLOC_ROW(w);
+    buf[i] = ALLOC_COLS(w);
     if (buf[i] == NULL)
       goto fail;
   }
@@ -43,7 +43,7 @@ fail:
 static inline int sfsetw(const pos w1, surface *const s) {
   void *ptr;
   pos i, w0 = s->w;
-  char **row;
+  glyph **row;
 
   errno = 0; // sanity check
 
@@ -54,11 +54,11 @@ static inline int sfsetw(const pos w1, surface *const s) {
   }
 
   for (i = 0, row = s->buf; i < s->h; i++, row++) {
-    ptr = (void *)reallocarray(*row, w1, sizeof(char));
+    ptr = (void *)reallocarray(*row, w1, sizeof(glyph));
     if (ptr == NULL) {
       return errno;
     }
-    *row = (char *)ptr;
+    *row = (glyph *)ptr;
   }
 
   s->w = w1;
@@ -73,7 +73,7 @@ static inline int sfsetw(const pos w1, surface *const s) {
 static inline int sfseth(const pos h1, surface *const s) {
   void *ptr;
   pos i, h0 = s->h;
-  char **row;
+  glyph **row;
 
   errno = 0; // sanity check
 
@@ -91,18 +91,18 @@ static inline int sfseth(const pos h1, surface *const s) {
   }
 
   // use ptr to avoid losing unfreed s->buf
-  ptr = (void *)reallocarray(s->buf, h1, sizeof(char));
+  ptr = (void *)reallocarray(s->buf, h1, sizeof(glyph));
   if (ptr == NULL)
     return errno;
   // ENOMEM X_X
 
-  s->buf = (char **)ptr;
+  s->buf = (glyph **)ptr;
   s->h = h1;
 
   // height increased (alloc bottom rows)
   if (h1 > h0) {
     for (i = h0, row = s->buf; i < h1; i++, row++) {
-      *row = ALLOC_ROW(s->w);
+      *row = ALLOC_COLS(s->w);
       if (*row == NULL)
         return errno;
     }
@@ -135,7 +135,7 @@ int sfresize(const pos w1, const pos h1, surface *const s) {
 __attribute__((malloc, warn_unused_result)) surface *sfalloc(const pos x, const pos y, const pos w, const pos h) {
   surface *s;
 
-  char **buf = sfbuf(w, h);
+  glyph **buf = sfbuf(w, h);
   if (buf == NULL)
     return NULL;
 
@@ -155,7 +155,7 @@ __attribute__((malloc, warn_unused_result)) surface *sfalloc(const pos x, const
 
 void sffree(surface *const s) {
   pos i;
-  char **row;
+  glyph **row;
   for (i=0, row=s->buf; i < s->h; i++, row++) {
     free(*row);
   }

src/surface.h

@@ -1,15 +1,11 @@
 #ifndef _CURSETREE_SURFACE_H
 #define _CURSETREE_SURFACE_H
 
-/* Initial row and column coordinates */
-#define ROW0 1
-#define COL0 1
-
-typedef unsigned short pos;
+#include "_ct_shared.h"
 
 typedef struct ct_surface {
   pos x, y, w, h;
-  char **buf;
+  glyph **buf;
   pos vcx, vcy; /* virtual cursor position */
 } surface;
 

src/term.c

@@ -6,7 +6,7 @@
 #include "_ct_shared.h"
 #include "term.h"
 
-int stashterm(const struct ct_term **const term) {
+int stashterm(struct ct_term **const term) {
   struct ct_term *t = (struct ct_term *)malloc(sizeof(struct ct_term));
 
   t->fd = open("/dev/tty", O_RDONLY);

src/term.h

@@ -1,18 +1,20 @@
 #ifndef _CURSETREE_TERM_H
 #define _CURSETREE_TERM_H
 
-#include "termios.h"
+#include <termios.h>
+
+#include "_ct_shared.h"
 
 struct ct_term {
   int fd;
-  unsigned short cols;
-  unsigned short rows;
+  pos cols;
+  pos rows;
 
   struct termios termios0;
   struct termios termios;
 };
 
-int stashterm(const struct ct_term **const term);
+int stashterm(struct ct_term **const term);
 void resetterm(struct ct_term *const term);
 int termsize(struct ct_term *const term);