first commit

Makefile

@@ -0,0 +1,22 @@
+CC = gcc
+CFLAGS = -Wall -Wextra -pedantic-errors -std=c99 -Wno-format
+OUTFILE = cards
+
+SRCDIR = src
+OBJDIR = obj
+INCDIR = src/include
+
+SRC = $(wildcard $(SRCDIR)/*.c)
+INC = $(wildcard $(INCDIR)/*.h)
+_OBJ = $(SRC:.c=.o)
+OBJ = $(subst $(SRCDIR),$(OBJDIR),$(_OBJ))
+
+$(OUTFILE): $(OBJ)
+	$(CC) $(CFLAGS) -o $(OUTFILE) $(OBJ)
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.c $(INCDIR)/%.h
+	$(CC) $(CFLAGS) -o $@ -c $<
+
+.PHONY: clean
+clean:
+	-rm $(OUTFILE) $(OBJ)

example.csv

@@ -0,0 +1,5 @@
+the,quick
+brown,fox
+jumped,over
+the,lazy
+dog,foobar

src/card.c

@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "include/main.h"
+#include "include/card.h"
+
+CARD new_card(char *o, char *r) {
+    CARD c;
+    c.obverse = o;
+    c.reverse = r;
+    return c;
+}
+
+CARD* card_parse_csv(char *f, size_t *ct) {
+    FILE *fp;
+    char *l, *o, *r;
+    const char *delims = ",\0";
+    CARD *ca;
+
+    if ((fp = fopen(f, "r")) == NULL)
+        die("failed to open file (null pointer)");
+
+    *ct = 0;
+
+    while ((l = fgetl(fp)) != NULL) {
+
+        if ((o = strtok(l, delims)) == NULL)
+            die("improper csv format");
+        if ((r = strtok(NULL, delims)) == NULL)
+            die("improper csv format");
+
+        /* printf("o: `%s`, r: `%s`\n", o, r); */
+
+        ca = (CARD *)realloc((void *)ca, (sizeof(CARD) * ++(*ct)));
+        ca[(*ct) - 1] = new_card(strdup_(o), strdup_(r));
+
+        free(l);
+        l = NULL;
+    }
+
+    return ca;
+}

src/include/card.h

@@ -0,0 +1,13 @@
+#ifndef CARD_H
+#define CARD_H
+
+typedef struct card_T {
+    char *obverse;
+    char *reverse;
+} CARD;
+
+CARD new_card(char *, char *);
+
+CARD* card_parse_csv(char *, size_t *);
+
+#endif

src/include/main.h

@@ -0,0 +1,8 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+void die(char *);
+char *fgetl(FILE *);
+char *strdup_(char *);
+
+#endif

src/main.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "include/main.h"
+#include "include/card.h"
+
+void die(char *s) {
+    fprintf(stderr, "fatal: %s\n", s);
+    exit(1);
+}
+
+char *fgetl(FILE *stream) {
+    size_t s_sz = 1; // +1 for null byte
+    char *s = NULL;
+    char c;
+
+    while ((c = fgetc(stream)) != '\n') {
+        if (c == EOF)
+            return NULL;
+
+        s = (char *)realloc((void *)s, ++s_sz);
+        s[s_sz - 2] = c;
+    }
+
+    if (s != NULL)
+        s[s_sz - 1] = '\0';
+
+    return s;
+}
+
+char *strdup_(char *s) {
+    char *r;
+    r = (char *)malloc(strlen(s) + 1);
+    strcpy(r, s);
+    return r;
+}
+
+int main(int argc, char **argv) {
+    CARD *cards;
+    size_t cards_ct;
+
+    if (argc < 1)
+        die("filename required");
+
+    cards = card_parse_csv(argv[1], &cards_ct);
+
+    for (size_t i = 0; i < cards_ct; i++)
+        printf("o: `%s`, r: `%s`\n", cards[i].obverse, cards[i].reverse);
+
+    return 0;
+}