csv

commit 9f1ea74d9dbd70df603318e6ca3fdd6bd473c039
Author: phoebos <ben@bvnf.space>
Date:   Fri,  1 Oct 2021 15:37:43 +0000

initial

Diffstat:
A
.gitignore
 | 
1
+
A
Makefile
 | 
5
+++++
A
csv.c
 | 
58
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
test.csv
 | 
5
+++++

4 files changed, 69 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+csv
diff --git a/Makefile b/Makefile
@@ -0,0 +1,5 @@
+.POSIX:
+X := ${CFLAGS}
+CFLAGS = ${X} -Og -ggdb3
+
+csv:
diff --git a/csv.c b/csv.c
@@ -0,0 +1,58 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define MAX_LINE 2048
+
+int
+main(int argc, char **argv) {
+	if (argc > 2) {
+		fprintf(stderr, "usage: %s [file]\n\tif no filename given, data is \
+read from stdin\n", argv[0]);
+		return 1;
+	}
+	FILE *f;
+	if (argc == 1) {
+		f = stdin;
+	} else {
+		f = fopen(argv[1], "r");
+		if (f < 0) {
+			perror(argv[1]);
+			return 1;
+		}
+	}
+
+	char **header = malloc(sizeof (char *) * MAX_LINE);
+	char **headerp = header;
+
+	/* read header */
+	int c;
+	char *n = malloc(MAX_LINE);
+	char *np = n;
+	while ((c = fgetc(f)) != EOF) {
+		fprintf(stderr, "got %c\n", c);
+		if (c == '\n') goto storeit;
+		if (c == ',') {
+			printf("its a ,\n");
+storeit:
+			*np++ = '\0';
+			*headerp = malloc(sizeof n * sizeof *n);
+			strcpy(*headerp, n);
+			headerp++;
+			//*header = n;
+			//header += sizeof n;
+			n = np;
+			continue;
+		}
+		*np++ = c;
+	}
+	fprintf(stderr, "reading\n");
+
+	do {
+		printf("%s ", *header);
+	} while (*++header);
+	fclose(f);
+	return 0;
+}
diff --git a/test.csv b/test.csv
@@ -0,0 +1,5 @@
+date,name,quantity
+1,me,0
+2,ben,5
+3,mia,123
+4,you,65225