From bd85ae398aefd7dbc908191eb83ee1ffff840ec9 Mon Sep 17 00:00:00 2001
From: John Kerl <kerl.john.r@gmail.com>
Date: Thu, 27 Aug 2015 22:55:03 -0400
Subject: [PATCH] [read-opt] experiment iterate

---
 c/bld.sh                              |  7 +++-
 c/experimental/getline_for_profile.c  | 17 +++++++++
 c/experimental/getmulti_for_profile.c | 51 +++++++++++++++++++++++++++
 3 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 c/experimental/getline_for_profile.c
 create mode 100644 c/experimental/getmulti_for_profile.c

diff --git a/c/bld.sh b/c/bld.sh
index e9614a925..7c765bc3a 100644
--- a/c/bld.sh
+++ b/c/bld.sh
@@ -1 +1,6 @@
-gcc -Wall -Werror -I.  lib/mlrutil.c lib/string_builder.c lib/mlr_globals.c containers/slls.c input/peek_file_reader.c experimental/csv0.c
+#gcc -Wall -Werror -I.  lib/mlrutil.c lib/string_builder.c lib/mlr_globals.c containers/slls.c input/peek_file_reader.c experimental/csv0.c
+gcc -Wall -Werror -I. -O3 lib/mlrutil.c lib/mlr_globals.c experimental/getline_for_profile.c -o get1
+gcc -Wall -Werror -I. -O3 lib/mlrutil.c lib/mlr_globals.c \
+  lib/string_builder.c \
+  input/peek_file_reader.c \
+  experimental/getmulti_for_profile.c -o get2
diff --git a/c/experimental/getline_for_profile.c b/c/experimental/getline_for_profile.c
new file mode 100644
index 000000000..ce0282dc6
--- /dev/null
+++ b/c/experimental/getline_for_profile.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "lib/mlrutil.h"
+#include "input/file_reader_stdio.h"
+#include "input/lrec_readers.h"
+
+int main(void) {
+	while (1) {
+		char* line = mlr_get_line(stdin, '\n');
+		if (line == NULL)
+			break;
+		fputs(line, stdout);
+		fputc('\n', stdout);
+		free(line);
+	}
+	return 0;
+}
diff --git a/c/experimental/getmulti_for_profile.c b/c/experimental/getmulti_for_profile.c
new file mode 100644
index 000000000..c32e45ebe
--- /dev/null
+++ b/c/experimental/getmulti_for_profile.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "lib/mlr_globals.h"
+#include "lib/mlrutil.h"
+#include "containers/slls.h"
+#include "containers/lhmslv.h"
+#include "input/file_reader_stdio.h"
+#include "input/lrec_readers.h"
+#include "lib/string_builder.h"
+#include "input/peek_file_reader.h"
+
+#define PEEK_BUF_LEN             32
+#define STRING_BUILDER_INIT_SIZE 1024
+
+static char* mlr_get_line2(FILE* input_stream, char* irs, int irs_len,
+	peek_file_reader_t* pfr, string_builder_t* psb)
+{
+	while (TRUE) {
+		if (pfr_at_eof(pfr)) {
+			if (sb_is_empty(psb))
+				return NULL;
+			else
+				return sb_finish(psb);
+		} else if (pfr_next_is(pfr, irs, irs_len)) {
+			if (!pfr_advance_past(pfr, irs)) {
+				fprintf(stderr, "%s: Internal coding error: IRS found and lost.\n", MLR_GLOBALS.argv0);
+				exit(1);
+			}
+			return sb_finish(psb);
+		} else {
+			sb_append_char(psb, pfr_read_char(pfr));
+		}
+	}
+}
+
+int main(void) {
+	FILE* input_stream = stdin;
+	peek_file_reader_t* pfr = pfr_alloc(input_stream, PEEK_BUF_LEN);
+	string_builder_t  sb;
+	string_builder_t* psb = &sb;
+	sb_init(&sb, STRING_BUILDER_INIT_SIZE);
+
+	while (1) {
+		char* line = mlr_get_line2(stdin, "\r\n", 2, pfr, psb);
+		if (line == NULL)
+			break;
+		fputs(line, stdout);
+		free(line);
+	}
+	return 0;
+}