From ec605bf138a16e62d6398d0bf2a43d2fea2dbe74 Mon Sep 17 00:00:00 2001
From: Lieuwe Rooijakkers <lieuwerooijakkers@gmail.com>
Date: Fri, 2 Aug 2024 22:55:54 +0200
Subject: toilet: use read_file.h

---
 src/toilet.c | 89 ++++++++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 60 insertions(+), 29 deletions(-)

diff --git a/src/toilet.c b/src/toilet.c
index 10c7510..b1da9f1 100644
--- a/src/toilet.c
+++ b/src/toilet.c
@@ -8,11 +8,14 @@
 #include <string.h>
 #include <sys/types.h>
 #include <unistd.h>
+
 #include "util/versie.h"
 #include "util/error.h"
 #include "util/debug.h"
 #include "util/map.h"
 
+#include "io/read_file.h"
+
 static void usage(FILE *f) {
   fprintf(f,
       "Gebruik: toilet [-nchV] [BESTAND]...\n"
@@ -67,21 +70,21 @@ static char** parse_options(int argc, char **argv, int *modeMap) {
   return argv + optind;
 }
 
-size_t get_count(enum MODE mode, struct map *map) {
+size_t get_count(enum MODE mode, struct filebuf *fb) {
   switch (mode) {
     case M_BYTES:
-      return map->sb.st_size;
+      return fb->sz;
 
     case M_WORDS: {
       size_t words = 0;
 
-      assert(map->sb.st_size >= 0);
+      assert(fb->sz >= 0);
       // (c) Tom Forging
-      for (size_t i = 0; i < (size_t)map->sb.st_size;) {
+      for (size_t i = 0; i < (size_t)fb->sz;) {
         size_t previ = i;
-        while (!isspace(map->addr[i])) i++;
+        while (!isspace(fb->buf[i])) i++;
         words += i != previ;
-        while (isspace(map->addr[i])) i++;
+        while (isspace(fb->buf[i])) i++;
       }
 
       return words;
@@ -89,15 +92,15 @@ size_t get_count(enum MODE mode, struct map *map) {
 
     case M_LINES: {
       size_t lines = 0;
-      char *ptr = map->addr;
+      size_t i = 0;
 
-      while (ptr != map->end) {
-        if (*ptr == '\n') lines++;
-        ptr++;
+      while (i != fb->sz) {
+        if (fb->buf[i] == '\n') lines++;
+        i++;
       }
 
       // handle case if file does not have trailing newline
-      if (*(ptr - 1) != '\n') {
+      if (fb->buf[i - 1] != '\n') {
         lines++;
       }
 
@@ -109,6 +112,20 @@ size_t get_count(enum MODE mode, struct map *map) {
   }
 }
 
+static void process(char *fname, struct filebuf *fb, int modeMap) {
+  for (enum MODE mode = 1; mode <= M_BYTES; mode <<= 1) {
+    if (mode & modeMap) {
+      const size_t count = get_count(mode, fb);
+      printf("%li ", count);
+    }
+  }
+  printf("%s\n", fname);
+  free_filebuf(fb);
+}
+
+// TODO: be smarter, toilet doesn't have to read the whole file in memory (for
+// unmappable files)
+
 int entry_toilet(int argc, char **argv) {
   int modeMap = 0;
   char **args = parse_options(argc, argv, &modeMap);
@@ -116,30 +133,44 @@ int entry_toilet(int argc, char **argv) {
     modeMap = INT_MAX;
   }
 
-  while (*args != NULL) {
-    bool isdir;
-    struct map *map = open_map(*args, &isdir);
-    if (map == NULL && !isdir) {
-      fprintf(stderr, "toilet: fout bij lezen bestand '%s'\n", *args);
-      return 1;
-    } else if (isdir) {
-      fprintf(stderr, "toilet: %s: is een mapje\n", *args);
-      goto next;
-    }
+  if (*args == NULL) {
+    struct filebuf *fb = stream_to_filebuf(stdin, 0);
+    if (fb == NULL) goto err_stdin;
 
-    for (enum MODE mode = 1; mode <= M_BYTES; mode <<= 1) {
-      if (mode & modeMap) {
-        const size_t count = get_count(mode, map);
-        printf("%li ", count);
-      }
+    process("", fb, modeMap);
+    return 0;
+  }
+
+  while (*args != NULL) {
+    struct filebuf *fb = NULL;
+
+    if (!strcmp(*args, "-")) {
+      fb = stream_to_filebuf(stdin, 0);
+      if (fb == NULL) goto err_stdin;
+      *args = ""; // no filename when stdin
+    } else {
+      bool isdir = false;
+      fb = file_to_filebuf(*args, 0, &isdir);
+      if (isdir) goto err_isdir;
+      else if (fb == NULL) goto err_file;
     }
-    printf("%s\n", *args);
 
-    close_map(map);
+    process(*args, fb, modeMap);
 
-next:
     args++;
   }
 
   return 0;
+
+err_stdin:
+  fprintf(stderr, "toilet: fout bij lezen van standaard invoer\n");
+  return 1;
+
+err_file:
+  fprintf(stderr, "toilet: fout bij lezen van bestand\n");
+  return 1;
+
+err_isdir:
+  fprintf(stderr, "toilet: bestand '%s' is een mapje\n", *args);
+  return 1;
 }
-- 
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