Moved C contract library to separate repo.

examples/c_contract/.gitignore

@@ -1,2 +1 @@
-rnd_contract
-echo_contract
+rnd_contract

examples/c_contract/echo_contract.c

@@ -1,118 +0,0 @@
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include "hotpocket_contract.h"
-
-// gcc echo_contract.c -o echo_contract
-
-void store_timestamp(const uint64_t timestamp);
-void process_user_message(const struct hp_user *user, const void *buf, const uint32_t len);
-
-int main(int argc, char **argv)
-{
-    if (hp_init_contract() == -1)
-        return 1;
-
-    const struct hp_contract_context *ctx = hp_get_context();
-
-    // We store the execution timestamp as an example state file change.
-    if (!ctx->readonly)
-        store_timestamp(ctx->timestamp);
-
-    // Read and process all user inputs from the mmap.
-    const void *input_mmap = hp_init_user_input_mmap();
-
-    // Iterate through all users.
-    for (size_t u = 0; u < ctx->users.count; u++)
-    {
-        const struct hp_user *user = &ctx->users.list[u];
-
-        // Iterate through all inputs from this user.
-        for (size_t i = 0; i < user->inputs.count; i++)
-        {
-            const struct hp_user_input input = user->inputs.list[i];
-
-            // Instead of mmap, we can also read the inputs from 'ctx->users.in_fd' using file I/O.
-            // However, using mmap is recommended because user inputs already reside in memory.
-            const uint8_t *buf = (uint8_t *)input_mmap + input.offset;
-
-            process_user_message(user, buf, input.size);
-        }
-    }
-
-    // NPL message send example:
-    // hp_write_npl_msg("Hello!", 6);
-
-    // NPL message receive example:
-    // // Allocate buffers for received message.
-    // char sender[HP_KEY_SIZE];
-    // char *msg = malloc(HP_NPL_MSG_MAX_SIZE);
-    // // Wait for 200ms for incoming message. We will receive our own message as well if we are part of unl.
-    // const int len = hp_read_npl_msg(msg, sender, 200);
-    // if (len > 0)
-    //     printf("Received %.*s from %.*s", len, msg, HP_KEY_SIZE, sender);
-    // free(msg);
-
-    // Peers update example:
-    // const char *add_peers[2] = {"localhost:4444", "localhost:3333"};
-    // hp_update_peers(add_peers, 2, NULL, 0);
-
-    // Config update example:
-    // struct hp_config *config = hp_get_config();
-    // hp_set_config_string(&config->version, "2.0", 4);
-    // config->round_limits.user_input_bytes = 1024;
-    // struct hp_public_key new_unl[2] = {{"ed726f9f536904b125bdca10bbdd1e66591b274799b92ac8bcfc75bf45d7da4c0f"},
-    //                                  {"ed3e63992d62804ea0c182e5b22fe43c4b652fbbf068ec7520f3020f4c3771416a"}};
-    // hp_set_config_unl(config, new_unl, 2);
-    // hp_update_config(config);
-    // hp_free_config(config);
-
-    hp_deinit_user_input_mmap();
-    hp_deinit_contract();
-    return 0;
-}
-
-void store_timestamp(const uint64_t timestamp)
-{
-    int fd = open("exects.txt", O_RDWR | O_CREAT | O_APPEND, 0644);
-    if (fd > 0)
-    {
-        char tsbuf[20];
-        memset(tsbuf, 0, 20);
-        sprintf(tsbuf, "%lu\n", timestamp);
-        struct iovec vec[2] = {{(void *)"ts:", 3}, {(void *)tsbuf, strlen(tsbuf)}};
-        writev(fd, vec, 2);
-        close(fd);
-    }
-}
-
-void process_user_message(const struct hp_user *user, const void *buf, const uint32_t len)
-{
-    if (strncmp((const char *)buf, "ts", 2) == 0)
-    {
-        int fd = open("exects.txt", O_RDONLY);
-        if (fd > 0)
-        {
-            struct stat st;
-            if (fstat(fd, &st) != -1)
-            {
-                char tsbuf[st.st_size];
-                if (read(fd, tsbuf, st.st_size) > 0)
-                {
-                    for (int i = 0; i < st.st_size; i++)
-                    {
-                        if (tsbuf[i] == '\n' || tsbuf[i] == 0)
-                            tsbuf[i] = ' ';
-                    }
-                    hp_write_user_msg(user, tsbuf, st.st_size - 1);
-                }
-            }
-            close(fd);
-        }
-    }
-    else
-    {
-        struct iovec vec[2] = {{(void *)"Echoing: ", 9}, {(void *)buf, len}};
-        hp_writev_user_msg(user, vec, 2);
-    }
-}