Merge pull request #332828 from Sigmanificient/cano

diff --git a/src/main.c b/src/main.c

index 993a76f..de5b2c5 100644

--- a/src/main.c

+++ b/src/main.c

@@ -6,12 +6,8 @@ _Static_assert(sizeof(string_modes)/sizeof(*string_modes) == MODE_COUNT, "Number

 char *get_help_page(char *page) {

     if (page == NULL) return NULL;

-    char *env = getenv("HOME");

-    if(env == NULL) CRASH("could not get HOME");

-

-    char *help_page = calloc(128, sizeof(char));

-    if (help_page == NULL) CRASH("could not calloc memory for help page");

-    snprintf(help_page, 128, "%s/.local/share/cano/help/%s", env, page);

+    char *help_page;

+    asprintf(&help_page, "@help@/%s", page);

     // check if file exists

     struct stat st;

diff --git a/src/tools.c b/src/tools.c

index 220d7a1..4ce211e 100644

--- a/src/tools.c

+++ b/src/tools.c

@@ -63,6 +63,9 @@ void free_undo_stack(Undo_Stack *undo) {

 void handle_save(Buffer *buffer) {

     FILE *file = fopen(buffer->filename, "w");

+

+    if (file == NULL)

+        return;

     fwrite(buffer->data.data, buffer->data.count, sizeof(char), file);

     fclose(file);

 }

@@ -72,7 +75,7 @@ Buffer *load_buffer_from_file(char *filename) {

     size_t filename_s = strlen(filename)+1;

     buffer->filename = calloc(filename_s, sizeof(char));

     strncpy(buffer->filename, filename, filename_s);

-    FILE *file = fopen(filename, "a+");

+    FILE *file = fopen(filename, "r");

     if(file == NULL) CRASH("Could not open file");

     fseek(file, 0, SEEK_END);

     size_t length = ftell(file);

{ stdenv

, lib

, fetchFromGitHub

, gnumake

, ncurses

{

  stdenv,

  lib,

  fetchFromGitHub,

  installShellFiles,

  ncurses,

}:

stdenv.mkDerivation (finalAttrs: {

  pname = "cano";

  version = "0.1.0-alpha";

  version = "0.2.0-alpha";

  src = fetchFromGitHub {

    owner = "CobbCoding1";

    repo = "Cano";

    rev = "v${finalAttrs.version}";

    hash = "sha256-BKbBDN7xZwlNzw7UFgX+PD9UXbr9FtELo+PlbfSHyRY=";

    hash = "sha256-OaWj0AKw3+sEhcAbIjgOLfxwCKRG6O1k+zSp0GnnFn8=";

  };

  buildInputs = [ gnumake ncurses ];

  hardeningDisable = [ "format" "fortify" ];

  patches = [ ./allow-read-only-store-help-page.patch ];

  postPatch = ''

    substituteInPlace src/main.c \

      --replace-fail "@help@" "${placeholder "out"}/share/help"

  '';

  nativeBuildInputs = [ installShellFiles ];

  buildInputs = [ ncurses ];

  hardeningDisable = [

    "format"

    "fortify"

  ];

  installPhase = ''

    mkdir -p $out/bin

    cp build/cano $out/bin

    runHook preInstall

    install -Dm755 build/cano -t $out/bin

    mkdir -p $out/share

    cp -r docs/help $out/share

    installManPage docs/cano.1

    runHook postInstall

  '';

  meta = {