From 7d956c533e9fd7d3bbb9a4a8b7f89f0fe54d4bc3 Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Sun, 13 Apr 2025 22:43:46 +0200
Subject: first draft

---
 contrib/csv-parser.py  |  18 +++++++++
 contrib/csv-parser.rb  |  10 +++++
 contrib/csv-perf.c     |  46 +++++++++++++++++++++
 contrib/csv-tutorial.c | 106 +++++++++++++++++++++++++++++++++++++++++++++++++
 contrib/seq-read.c     |  20 ++++++++++
 5 files changed, 200 insertions(+)
 create mode 100755 contrib/csv-parser.py
 create mode 100755 contrib/csv-parser.rb
 create mode 100644 contrib/csv-perf.c
 create mode 100644 contrib/csv-tutorial.c
 create mode 100644 contrib/seq-read.c

(limited to 'contrib')

diff --git a/contrib/csv-parser.py b/contrib/csv-parser.py
new file mode 100755
index 0000000..9029321
--- /dev/null
+++ b/contrib/csv-parser.py
@@ -0,0 +1,18 @@
+#! /usr/local/bin/python3.7
+
+import csv, time, sys
+
+with open(sys.argv[1]) as csv_file:
+    start = time.time()
+    csv_reader = csv.reader(csv_file, delimiter=',')
+    line_count = 0
+    for row in csv_reader:
+        if line_count == 0:
+            line_count += 1
+        else:
+            line_count += 1
+
+    end = time.time()
+    print(f'Processed {line_count} lines.')
+    print(end - start)
+
diff --git a/contrib/csv-parser.rb b/contrib/csv-parser.rb
new file mode 100755
index 0000000..aaac877
--- /dev/null
+++ b/contrib/csv-parser.rb
@@ -0,0 +1,10 @@
+#! /usr/local/bin/ruby
+
+require 'csv'
+
+startTime = Time.now
+CSV.read(ARGV[0])
+endTime = Time.now
+
+print(endTime-startTime)
+puts "\n"
diff --git a/contrib/csv-perf.c b/contrib/csv-perf.c
new file mode 100644
index 0000000..1c0f7a3
--- /dev/null
+++ b/contrib/csv-perf.c
@@ -0,0 +1,46 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "csv.h"
+
+static int
+test(FILE *f)
+{
+	int   line = 0;
+	csv_t csv  = { 0 };
+
+	while ( csv_read(&csv, f) ) {
+		++line;
+	}
+
+	return line;
+}
+
+int
+main(int argc, char *argv[])
+{
+	if ( argc != 2 ) {
+		fprintf(stderr, "usage: %s testfile\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	FILE *in = fopen(argv[1], "r");
+	if ( in == NULL ) {
+		fprintf(stderr, "failed to open testfile...\n");
+		return EXIT_FAILURE;
+	}
+
+	clock_t start = clock();
+
+	int lines = test(in);
+
+	clock_t end = clock();
+
+	fclose(in);
+
+	printf("%d lines processed, duration: %.3lf sec\n", lines, ((double) (end - start)) / CLOCKS_PER_SEC);
+
+	return EXIT_SUCCESS;
+}
diff --git a/contrib/csv-tutorial.c b/contrib/csv-tutorial.c
new file mode 100644
index 0000000..9bdb7e6
--- /dev/null
+++ b/contrib/csv-tutorial.c
@@ -0,0 +1,106 @@
+#include <setjmp.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "csv.h"
+
+bool
+processFile(const char *filename)
+{
+	FILE *in = fopen(filename, "r");
+
+	if ( in == NULL ) {
+		return false;
+	}
+
+	csv_t csv;
+	csv_init(&csv);
+
+	while ( csv_read(&csv, in) ) {
+		const size_t nfields = csv_nfields(&csv);
+		// ...
+	}
+	csv_cleanup(&csv);
+
+	(void) fclose(in);
+	return true;
+}
+
+bool
+processFile_options(const char *filename)
+{
+	FILE *in = fopen(filename, "r");
+
+	if ( in == NULL ) {
+		return false;
+	}
+
+	csv_options_t csv_options   = csv_default_options;
+	csv_options.field_delimiter = '"';
+	csv_options.field_separator = ',';
+
+	csv_t csv;
+	csv_init_opt(&csv, &csv_options);
+
+	while ( csv_read(&csv, in) ) {
+		const size_t nfields = csv_nfields(&csv);
+		// ...
+	}
+	csv_cleanup(&csv);
+
+	(void) fclose(in);
+	return true;
+}
+
+static void
+csvErrorHandler(csv_err_t err, void *cb_arg)
+{
+	longjmp(*((jmp_buf *) cb_arg), err);
+}
+
+bool
+processFile_error(const char *filename)
+{
+	FILE *in = fopen(filename, "r");
+
+	if ( in == NULL ) {
+		return false;
+	}
+
+	csv_options_t csv_options   = csv_default_options;
+	csv_options.field_delimiter = '"';
+	csv_options.field_separator = ',';
+
+	jmp_buf env;
+	csv_options.cb_error     = csvErrorHandler;
+	csv_options.cb_error_arg = &env;
+
+	csv_t csv;
+	csv_init_opt(&csv, &csv_options);
+
+	switch ( setjmp(env) ) {
+	case CSV_ERR_OK:
+		while ( csv_read(&csv, in) ) {
+			const size_t nfields = csv_nfields(&csv);
+			// ...
+		}
+		break;
+
+	case CSV_ERR_OUT_OF_MEMORY:
+	case CSV_ERR_OUT_OF_RANGE:
+	case CSV_ERR_IO_READ:
+	case CSV_ERR_IO_WRITE:
+		csv_cleanup(&csv);
+		break;
+	}
+
+	(void) fclose(in);
+	return true;
+}
+
+int
+main(void)
+{
+	return EXIT_SUCCESS;
+}
diff --git a/contrib/seq-read.c b/contrib/seq-read.c
new file mode 100644
index 0000000..90d201f
--- /dev/null
+++ b/contrib/seq-read.c
@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int
+main(void)
+{
+	clock_t start = clock();
+	size_t sum = 0;
+
+	for ( int ch; (ch = getc(stdin)) != EOF; ) {
+		sum += (unsigned char) ch;
+	}
+
+	clock_t end = clock();
+
+	printf("Result: %zu, Duration: %.3lf sec\n", sum, ((double)(end - start)) / CLOCKS_PER_SEC);
+
+	return EXIT_SUCCESS;
+}
-- 
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