From f3a540c2383e53b93a82ef76d5bc0ab210a09006 Mon Sep 17 00:00:00 2001
From: Lieuwe Rooijakkers <lieuwerooijakkers@gmail.com>
Date: Fri, 2 Aug 2024 22:47:08 +0200
Subject: remove lines.{c,h}

---
 src/io/lines.c | 94 ----------------------------------------------------------
 src/io/lines.h | 25 ----------------
 2 files changed, 119 deletions(-)
 delete mode 100644 src/io/lines.c
 delete mode 100644 src/io/lines.h

diff --git a/src/io/lines.c b/src/io/lines.c
deleted file mode 100644
index e5de6df..0000000
--- a/src/io/lines.c
+++ /dev/null
@@ -1,94 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-
-#include "lines.h"
-#include "util/debug.h"
-#include "util/error.h"
-
-
-bool file_lines_open(const char *progname, const char *fname, FILE *f, struct file_lines *dst) {
-  dst->f = f;
-
-  dst->cap = 4096;
-  dst->buffer = malloc(dst->cap);
-  if (!dst->buffer) {
-    print_error_nomem();
-    return false;
-  }
-
-  dst->cursor = 0;
-  dst->readfrom = (size_t)-1;
-  dst->progname = progname;
-  dst->fname = fname;
-  return true;
-}
-
-bool file_lines_read(struct file_lines *fl, struct string_view *dst) {
-  // Return already-read line if we have any
-  if (fl->readfrom != (size_t)-1) {
-    char *p = memchr(fl->buffer + fl->readfrom, '\n', fl->cursor - fl->readfrom);
-    if (p != NULL) {
-      dst->s = fl->buffer + fl->readfrom;
-      dst->len = p - (fl->buffer + fl->readfrom);
-      fl->readfrom = p - fl->buffer + 1;
-      DEBUG("next line from %zu len %zu\n", fl->readfrom, dst->len);
-      return true;
-    }
-
-    DEBUG("no more newlines, moving back from %zu len %zu\n", fl->readfrom, fl->cursor - fl->readfrom);
-    // move back whatever we have left
-    memmove(fl->buffer, fl->buffer + fl->readfrom, fl->cursor - fl->readfrom);
-    fl->cursor -= fl->readfrom;
-  }
-
-  DEBUG("cursor=%zu\n", fl->cursor);
-
-  // read a line
-  size_t linelen = 0;
-  bool havenewline = true;
-  while (true) {
-    // grow buffer when small
-    if (fl->cap - fl->cursor < 1024) {
-      fl->cap *= 2;
-      if (fl->cap == 0) {
-        fprintf(stderr, "%s: Regel te lang\n", fl->progname);
-        exit(1);
-      }
-      DEBUG("realloc to cap %zu\n", fl->cap);
-      fl->buffer = realloc(fl->buffer, fl->cap);
-      if (!fl->buffer) print_error_nomem();
-    }
-
-    size_t nr = fread(fl->buffer + fl->cursor, 1, fl->cap - fl->cursor, fl->f);
-    DEBUG("nr=%zu\n", nr);
-    if (nr == 0) {
-      if (feof(fl->f)) {
-        if (fl->cursor == 0) return false;
-        linelen = fl->cursor;
-        havenewline = false;
-        break;
-      }
-      if (fl->fname) fprintf(stderr, "%s: Fout bij lezen van bestand '%s'\n", fl->progname, fl->fname);
-      else fprintf(stderr, "%s: Fout bij lezen van standaardinvoer\n", fl->progname);
-      exit(1);
-    }
-    char *p = memchr(fl->buffer + fl->cursor, '\n', nr);
-    fl->cursor += nr;
-    if (p != NULL) {
-      linelen = p - fl->buffer;
-      break;
-    }
-  }
-
-  DEBUG("line with len %zu (cursor=%zu)\n", linelen, fl->cursor);
-
-  // we have a newline at buffer + linelen; return lines in buffer
-  dst->s = fl->buffer;
-  dst->len = linelen;
-  fl->readfrom = linelen + havenewline;
-  return true;
-}
-
-void file_lines_close(struct file_lines *fl) {
-  free(fl->buffer);
-}
diff --git a/src/io/lines.h b/src/io/lines.h
deleted file mode 100644
index b09b756..0000000
--- a/src/io/lines.h
+++ /dev/null
@@ -1,25 +0,0 @@
-#pragma once
-
-#include <stdio.h>
-#include <stdbool.h>
-
-#include "util/string_view.h"
-
-
-struct file_lines {
-  const char *progname, *fname;
-
-  FILE *f;
-  size_t cap;
-  char *buffer;
-  size_t cursor;
-  size_t readfrom;  // if -1, no newline in buffer
-};
-
-// Returns false on EOF. FILE remains ownership of the caller.
-bool file_lines_open(const char *progname, const char *fname, FILE *f, struct file_lines *dst);
-
-// Returns whether successful
-bool file_lines_read(struct file_lines *fl, struct string_view *dst);
-
-void file_lines_close(struct file_lines *fl);
-- 
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