byte_header.c

@@ -1,94 +0,0 @@
-#include <assert.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-/*
- * Pack header data into a byte.
- * 3 bits are used for type (2^3 = 8 different types)
- * 5 bits are used for length (2^5 = 32 max length, unit is up to you)
- */
-
-typedef enum {
-    Ok = 0,
-    OversizedType,
-    OversizedLen,
-} Result;
-
-#define TYPE_LEN (4)
-#define LEN      (4)
-
-Result msg_create_header(uint8_t type, uint8_t len, uint8_t *out);
-void   msg_parse_header(uint8_t header, uint8_t *type_out, uint8_t *len_out);
-
-int main(void) {
-    assert(TYPE_LEN + LEN <= 8);
-    uint8_t maxlen = (1 << LEN) - 1;
-    uint8_t maxtype = (1 << TYPE_LEN) - 1;
-
-    {
-        uint8_t hdr;
-        Result  res = msg_create_header(3, 8, &hdr);
-
-        if (res == OversizedType)
-            printf("The type is out of range");
-        if (res == OversizedLen)
-            printf("The length is out of range");
-
-        printf("Header: 0x%02X\n", hdr);
-        printf("Error: %d\n", res);
-
-        uint8_t plen, ptype;
-        msg_parse_header(hdr, &ptype, &plen);
-        printf("Type: %d\n", ptype);
-        printf("Len: %d\n", plen);
-    }
-    {
-        printf("Max len: %d\n", maxlen);
-        printf("Max type: %d\n", maxtype);
-
-        uint8_t hdr;
-        Result  res = msg_create_header(maxtype, maxlen, &hdr);
-        assert(res == Ok);
-
-        uint8_t plen, ptype;
-        msg_parse_header(hdr, &ptype, &plen);
-        printf("plen: %d\n", plen);
-        printf("ptype: %d\n", ptype);
-        assert(ptype == maxtype);
-        assert(plen == maxlen);
-    }
-    {
-        for (int i = 0; i < 1000; i++) {
-            uint8_t len = arc4random() % maxlen;
-            uint8_t type = arc4random() % maxtype;
-            uint8_t hdr;
-            Result  res = msg_create_header(type, len, &hdr);
-            assert(res == Ok);
-
-            uint8_t plen, ptype;
-            msg_parse_header(hdr, &ptype, &plen);
-            assert(ptype == type);
-            assert(plen == len);
-        }
-    }
-
-    return 0;
-}
-
-Result msg_create_header(uint8_t type, uint8_t len, uint8_t *out) {
-    if (type > (1 << TYPE_LEN) - 1)
-        return OversizedType;
-
-    if (len > (1 << LEN) - 1)
-        return OversizedLen;
-
-    *out = (type << LEN) | (len & (0xFF >> TYPE_LEN));
-
-    return Ok;
-}
-
-void msg_parse_header(uint8_t header, uint8_t *type_out, uint8_t *len_out) {
-    *type_out = (header >> LEN) & ((1 << LEN) - 1);
-    *len_out = header & (0xFF >> TYPE_LEN);
-}

config_ini/Makefile

@@ -1,14 +0,0 @@
-CC = gcc
-CFLAGS = -Wall -O2
-
-TARGET = main.elf
-SRC = main.c conf.c
-
-#LDFLAGS =
-
-$(TARGET): $(SRC)
-	@echo CC $@
-	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
-
-clean:
-	rm -f $(TARGET)

config_ini/conf.c

@@ -1,80 +0,0 @@
-#include "conf.h"
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define MAX_LINE 256
-#define MAX_VAL  128
-
-/* Trim leading/trailing whitespace */
-static char *trim(char *str) {
-    char *end;
-
-    while (isspace((unsigned char)*str)) str++;
-    if (*str == 0)
-        return str; // only spaces
-
-    end = str + strnlen(str, MAX_VAL) - 1;
-
-    while (end > str && isspace((unsigned char)*end)) end--;
-    end[1] = '\0';
-    return str;
-}
-
-/* Load INI-style config */
-Config *config_load(const char *filename) {
-    FILE *f = fopen(filename, "r");
-    if (!f)
-        return NULL;
-
-    Config *cfg = calloc(1, sizeof(Config));
-    char    line[MAX_LINE];
-
-    while (fgets(line, sizeof(line), f)) {
-        char *s = trim(line);
-
-        // Skip empty or comment lines
-        if (*s == '\0' || *s == '#' || *s == ';')
-            continue;
-
-        char *eq = strchr(s, '=');
-        if (!eq)
-            continue; // invalid line, skip
-
-        *eq = '\0';
-        char *key = trim(s);
-        char *val = trim(eq + 1);
-
-        ConfigEntry *entry = malloc(sizeof(ConfigEntry));
-        entry->key = strndup(key, MAX_VAL);
-        entry->value = strndup(val, MAX_VAL);
-        entry->next = cfg->head;
-        cfg->head = entry;
-    }
-
-    fclose(f);
-    return cfg;
-}
-
-/* Get value for a key */
-const char *config_get(Config *cfg, const char *key) {
-    for (ConfigEntry *e = cfg->head; e; e = e->next) {
-        if (strncmp(e->key, key, MAX_VAL) == 0)
-            return e->value;
-    }
-    return NULL;
-}
-
-/* Free the config struct */
-void config_free(Config *cfg) {
-    ConfigEntry *e = cfg->head;
-    while (e) {
-        ConfigEntry *next = e->next;
-        free(e->key);
-        free(e->value);
-        free(e);
-        e = next;
-    }
-    free(cfg);
-}

config_ini/conf.h

@@ -1,13 +0,0 @@
-typedef struct ConfigEntry {
-    char               *key;
-    char               *value;
-    struct ConfigEntry *next;
-} ConfigEntry;
-
-typedef struct {
-    ConfigEntry *head;
-} Config;
-
-Config     *config_load(const char *filename);
-const char *config_get(Config *cfg, const char *key);
-void        config_free(Config *cfg);

config_ini/config.ini

@@ -1,6 +0,0 @@
-# Example INI file
-username = testuser
-password = secret123
-
-; comments work too
-timeout = 30

config_ini/config_broken.ini

@@ -1,7 +0,0 @@
-# Example INI file
-username = testuser ; inline
-password = secret123 # Comment
-
-; comments work too
-[aa]
-timeout = 30

config_ini/main.c

@@ -1,20 +0,0 @@
-#include "conf.h"
-#include <stdio.h>
-
-// Example usage
-int main(void) {
-    Config *cfg = config_load("config.ini");
-    if (!cfg) {
-        fprintf(stderr, "Failed to load config.ini\n");
-        return 1;
-    }
-
-    const char *user = config_get(cfg, "username");
-    const char *pass = config_get(cfg, "password");
-
-    printf("Username: %s\n", user ? user : "(not set)");
-    printf("Password: %s\n", pass ? pass : "(not set)");
-
-    config_free(cfg);
-    return 0;
-}

winsz.c

@@ -1,17 +0,0 @@
-#include <stdio.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-
-int main(void) {
-    struct winsize w;
-
-    if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) == -1) {
-        perror("ioctl");
-        return 1;
-    }
-
-    printf("Rows (height): %d\n", w.ws_row);
-    printf("Cols (width):  %d\n", w.ws_col);
-
-    return 0;
-}