From 2b7a3a815fb5d0b5155deec5f613730e898e4100 Mon Sep 17 00:00:00 2001 From: bpc2003 Date: Thu, 24 Apr 2025 17:08:08 -0400 Subject: Update Documentation --- src/lib/delkeys.c | 112 ----------------------------------------- src/lib/file.c | 100 ------------------------------------ src/lib/getkeys.c | 106 -------------------------------------- src/lib/mdb.h | 43 ---------------- src/lib/setkeys.c | 148 ------------------------------------------------------ src/lib/utils.c | 71 -------------------------- src/lib/utils.h | 16 ------ 7 files changed, 596 deletions(-) delete mode 100644 src/lib/delkeys.c delete mode 100644 src/lib/file.c delete mode 100644 src/lib/getkeys.c delete mode 100644 src/lib/mdb.h delete mode 100644 src/lib/setkeys.c delete mode 100644 src/lib/utils.c delete mode 100644 src/lib/utils.h (limited to 'src/lib') diff --git a/src/lib/delkeys.c b/src/lib/delkeys.c deleted file mode 100644 index a828e8d..0000000 --- a/src/lib/delkeys.c +++ /dev/null @@ -1,112 +0,0 @@ -#include -#include -#include - -#include "mdb.h" -#include "utils.h" - -static int delkey_helper(void *thr_data); -static int delkey(tablist_t *, int, char *); -static struct params *pass(mtx_t *mtx, tablist_t *list, char **keys, int len, int id); - - -struct params { - mtx_t *mtx; - tablist_t *copy; - char **keys; - int len; - int id; -}; - - -int delkeys(tablist_t *list, int id, char **keys, int len) -{ - mtx_t mtx; - if (id >= list[0].len || id < -1 || len < 0) - return -1; - if (mtx_init(&mtx, mtx_plain) != thrd_success) - return -2; - int rc = 0; - tablist_t *delkey_copy = calloc(list[0].len, sizeof(tablist_t)); - copytab(delkey_copy, list); - - if (id == -1) { - thrd_t *thrds = calloc(list[0].len, sizeof(thrd_t)); - for (int i = 0; i < delkey_copy[0].len; ++i) - thrd_create(&thrds[i], delkey_helper, pass(&mtx, delkey_copy, keys, len, i)); - for (int i = 0; i < delkey_copy[0].len; ++i) { - if (rc) - thrd_join(thrds[i], NULL); - else - thrd_join(thrds[i], &rc); - } - free(thrds); - } else - rc = delkey_helper(pass(&mtx, delkey_copy, keys, len, id)); - - if (!rc) { - dellist(list); - memmove(list, delkey_copy, delkey_copy[0].len * sizeof(tablist_t)); - } else - dellist(delkey_copy); - mtx_destroy(&mtx); - free(delkey_copy); - return rc; -} - -static int delkey_helper(void *thr_data) -{ - int rc = 0; - struct params *p = (struct params *) thr_data; - - mtx_lock(p->mtx); - if (p->len > 0 && p->keys != NULL) - for (int i = 0; i < p->len; ++i) { - if (p->keys[i] == NULL) { - mtx_unlock(p->mtx); - free(p); - return -3; - } - rc = delkey(p->copy, p->id, p->keys[i]); - } - else { - tablist_t *indexes = getkeys(p->copy, p->id, NULL, 0); - for (int i = 0; indexes[0].tab[i].flag; ++i) - rc = delkey(p->copy, p->id, indexes[0].tab[i].key); - free(indexes); - } - mtx_unlock(p->mtx); - - free(p); - return rc; -} - -static int delkey(tablist_t *list, int id, char *key) -{ - int idx = hash(key); - if (list[id].tab[idx].key == NULL) - return 1; - while (strcmp(list[id].tab[idx].key, key) && idx < TABLEN) - idx++; - if (idx >= TABLEN) - return 2; - free(list[id].tab[idx].key); - list[id].tab[idx].key = NULL; - if (list[id].tab[idx].flag == 3) { - free(list[id].tab[idx].value.str); - list[id].tab[idx].value.str = NULL; - } - list[id].tab[idx].flag = 0; - return 0; -} - -static struct params *pass(mtx_t *mtx, tablist_t *list, char **keys, int len, int id) -{ - struct params *p = calloc(1, sizeof(struct params)); - p->mtx = mtx; - p->copy = list; - p->keys = keys; - p->len = len; - p->id = id; - return p; -} diff --git a/src/lib/file.c b/src/lib/file.c deleted file mode 100644 index 8b0c715..0000000 --- a/src/lib/file.c +++ /dev/null @@ -1,100 +0,0 @@ -#include -#include -#include - -#include "mdb.h" - -static char *getpair(int *c, FILE *fp); - -// readdb - reads the given file into a key table list -// if fp returns NULL it will return the empty list -// if readdb fails it will return NULL -tablist_t *readdb(char *filename) -{ - int len = 2; - tablist_t *list = calloc(len, sizeof(tablist_t)); - list[0].len = len; - FILE *fp; - if (filename == NULL || - (fp = fopen(filename, "rb")) == NULL) - return list; - - int c, i = 0, open = 0; - char *p; - while ((c = fgetc(fp)) != EOF) { - switch (c) { - case 250: - p = getpair(&c, fp); - if (p == NULL) goto fail; - setkeys(&list, i, &p, 1); - free(p); - break; - case 251: - if (open == 1) goto fail; - open = 1; - break; - case 254: - open = 0; - i++; - break; - default: - goto fail; - } - } - fclose(fp); - return list; - -fail: - fclose(fp); - delkeys(list, -1, NULL, 0); - free(list); - return NULL; -} - -// writedb - writes a keytablist to a given file -void writedb(char *filename, tablist_t *list) -{ - FILE *fp = fopen(filename, "wb"); - if (fp == NULL) - return; - for (int i = 0; i < list[0].len; ++i) { - fputc(0xFB, fp); - tablist_t *indexes = getkeys(list, i, NULL, 0); - for (int j = 0; indexes[0].tab[j].flag; ++j) { - fprintf(fp, "\xfa%s:", indexes[0].tab[j].key); - switch (indexes[0].tab[j].flag) { - case 1: - fprintf(fp, "%.2lf\xfc", indexes[0].tab[j].value.num); - break; - case 2: - fprintf(fp, "%s\xfc", indexes[0].tab[j].value.boolean ? - "true" : "false"); - break; - case 3: - fprintf(fp, "%s\xfc", indexes[0].tab[j].value.str); - break; - } - } - free(indexes); - fputc(0xFE, fp); - } - fclose(fp); -} - -static char *getpair(int *c, FILE *fp) -{ - char *pair = calloc(3, sizeof(char)); - int i = 0, len = 3; - while ((*c = fgetc(fp)) != 252 && *c != EOF) { - if (i >= len) - pair = realloc(pair, ++len * sizeof(char)); - pair[i++] = *c; - } - pair = realloc(pair, ++len * sizeof(char)); - pair[i] = '\0'; - if (*c != 252) { - free(pair); - return NULL; - } - return pair; -} diff --git a/src/lib/getkeys.c b/src/lib/getkeys.c deleted file mode 100644 index ab1cb2f..0000000 --- a/src/lib/getkeys.c +++ /dev/null @@ -1,106 +0,0 @@ -#include -#include -#include -#include - -#include "mdb.h" -#include "utils.h" - -static tabidx_t getkey(tablist_t *list, int id, char *key); - -static int getkeys_helper(void *data); - -struct params { - mtx_t *mtx; - tablist_t *list; - tablist_t *ret; - char **keys; - int len; - int lid; - int pid; -}; - -static struct params *pass(mtx_t *mtx, tablist_t *list, tablist_t *ret, char **keys, int len, int lid, int pid); - -tablist_t *getkeys(tablist_t *list, int id, char **keys, int klen) -{ - mtx_t mtx; - if (id >= list[0].len || id < -1 || mtx_init(&mtx, mtx_plain) != thrd_success) - return NULL; - int rc = 0; - int len = id == -1 ? list[0].len : 1; - tablist_t *indexes = calloc(len, sizeof(tablist_t)); - indexes[0].len = len; - if (id >= 0) - rc = getkeys_helper(pass(&mtx, list, indexes, keys, klen, id, 0)); - else { - thrd_t *thrds = calloc(list[0].len, sizeof(thrd_t)); - for (int i = 0; i < list[0].len; ++i) - thrd_create(&thrds[i], getkeys_helper, pass(&mtx, list, indexes, keys, klen, i, i)); - for (int i = 0; i < list[0].len; ++i) { - if (rc) - thrd_join(thrds[i], NULL); - else - thrd_join(thrds[i], &rc); - } - free(thrds); - } - - mtx_destroy(&mtx); - if (!rc) - return indexes; - else { - free(indexes); - return NULL; - } -} - -static int getkeys_helper(void *data) -{ - struct params *p = (struct params *) data; - int rc = 0; - - mtx_lock(p->mtx); - if (p->keys == NULL) { - for (int i = 0, j = 0; i < TABLEN; ++i) - if (p->list[p->lid].tab[i].flag) - p->ret[p->pid].tab[j++] = p->list[p->lid].tab[i]; - } else { - for (int i = 0, j = 0; i < p->len; ++i) { - tabidx_t idx = getkey(p->list, p->lid, p->keys[i]); - if (idx.flag == 0) - rc = 1; - else - p->ret[p->pid].tab[j++] = idx; - } - } - mtx_unlock(p->mtx); - free(p); - return rc; -} - -static struct params *pass(mtx_t *mtx, tablist_t *list, tablist_t *ret, char **keys, int len, int lid, int pid) -{ - struct params *p = calloc(1, sizeof(struct params)); - p->mtx = mtx; - p->list = list; - p->ret = ret; - p->keys = keys; - p->len = len; - p->lid = lid; - p->pid = pid; - return p; -} - -static tabidx_t getkey(tablist_t *list, int id, char *key) -{ - int idx = hash(key); - if (list[id].tab[idx].key == NULL) - return (tabidx_t) { .key = NULL, .flag = 0, .value = { 0 } }; - - while (strcmp(list[id].tab[idx].key, key) && idx < TABLEN) - idx++; - if (idx >= TABLEN) - return (tabidx_t) { .key = NULL, .flag = 0, .value = { 0 } }; - return list[id].tab[idx]; -} diff --git a/src/lib/mdb.h b/src/lib/mdb.h deleted file mode 100644 index cb0502d..0000000 --- a/src/lib/mdb.h +++ /dev/null @@ -1,43 +0,0 @@ -#ifndef MDB_H -#define MDB_H - -#define TABLEN 1024 - -typedef struct { - char *key; - int flag; - union { - char *str; - double num; - unsigned int boolean : 1; - } value; -} tabidx_t; - -typedef struct { - int len; - tabidx_t tab[TABLEN]; -} tablist_t; - -/* getkeys: gets the provided keys from the provided id, - * if the id is set to -1, it will get the provided key from every document, - * if keys is NULL, it will get every key. */ -tablist_t *getkeys(tablist_t *list, int id, char **keys, int len); - -/* setkeys: sets the provided key-value pairs in the provided object, - * if the id is -1, it will set the provided pairs in every object. */ -int setkeys(tablist_t **list, int id, char **pairs, int len); - -/* delkeys: deletes the provided keys from the provided id, - * if the id is -1, it will delete the provided key from every document, - * if keys is NULL it, will delete every key. */ -int delkeys(tablist_t *list, int id, char **keys, int len); - -/* readdb: reads the provided db file, - * if the filename is NULL, it will return an empty table list, - * if the file format is invalid, it will return NULL. */ -tablist_t *readdb(char *filename); - -/* writedb: writes a table list to a database file. */ -void writedb(char *filename, tablist_t *list); - -#endif diff --git a/src/lib/setkeys.c b/src/lib/setkeys.c deleted file mode 100644 index f52ab48..0000000 --- a/src/lib/setkeys.c +++ /dev/null @@ -1,148 +0,0 @@ -#include -#include -#include -#include - -#include "mdb.h" -#include "utils.h" - -static int setkey_helper(void *thr_data); -static int setkey(tablist_t **, int, char *); -static char **getkv(char *pair); - -struct params { - mtx_t *mtx; - tablist_t **copy; - char *pair; - int id; -}; - -static struct params *pass(mtx_t *mtx, tablist_t **copy, char *pair, int id); - -int setkeys(tablist_t **list, int id, char **pairs, int len) -{ - mtx_t mtx; - if (id < -1 || pairs == NULL || len <= 0) - return -1; - if (mtx_init(&mtx, mtx_plain) != thrd_success) - return -2; - int rc = 0; - tablist_t *copy = calloc((*list)[0].len, sizeof(tablist_t)); - copytab(copy, *list); - - for (int i = 0; i < len; ++i) { - char *pair = pairs[i]; - if (id == -1) { - thrd_t *thrds = calloc((*list)[0].len, sizeof(thrd_t)); - for (int i = 0; i < copy[0].len; ++i) - thrd_create(&thrds[i], setkey_helper, pass(&mtx, ©, pair, i)); - for (int i = 0; i < copy[0].len; ++i) { - if (rc) - thrd_join(thrds[i], NULL); - else - thrd_join(thrds[i], &rc); - } - free(thrds); - } - else - rc = setkey_helper(pass(&mtx, ©, pair, id)); - } - - if (!rc) { - if (copy[0].len > (*list)[0].len) - *list = realloc(*list, copy[0].len * sizeof(tablist_t)); - dellist(*list); - copytab(*list, copy); - } - mtx_destroy(&mtx); - dellist(copy); - free(copy); - return rc; -} - -static int setkey_helper(void *thr_data) -{ - int rc; - struct params *p = (struct params *) thr_data; - - mtx_lock(p->mtx); - rc = setkey(p->copy, p->id, p->pair); - mtx_unlock(p->mtx); - - free(p); - return rc; -} - -static int setkey(tablist_t **list, int id, char *pair) -{ - if (pair == NULL) - return 1; - if (id >= (*list)[0].len) { - *list = realloc(*list, (id + 1) * sizeof(tablist_t)); - for (int i = (*list)[0].len; i <= id; ++i) { - for (int j = 0; j < TABLEN; ++j) - (*list)[i].tab[j] = (tabidx_t) { NULL, 0, { 0 } }; - } - (*list)[0].len = id + 1; - } - char **kv = getkv(pair); - if (kv == NULL) - return 2; - - int idx = hash(kv[0]); - while ((*list)[id].tab[idx].key != NULL && - strcmp((*list)[id].tab[idx].key, kv[0]) && - idx < TABLEN) idx++; - if (idx >= TABLEN) - return 2; - if (!(*list)[id].tab[idx].key) - (*list)[id].tab[idx].key = kv[0]; - else { - free(kv[0]); - if ((*list)[id].tab[idx].flag == 3) - free((*list)[id].tab[idx].value.str); - } - char *end; - double num = strtod(kv[1], &end); - if (*end == '\0') { - (*list)[id].tab[idx].flag = 1; - (*list)[id].tab[idx].value.num = num; - } else if (!strcmp(kv[1], "true") || !strcmp(kv[1], "false")) { - (*list)[id].tab[idx].flag = 2; - (*list)[id].tab[idx].value.boolean = !strcmp(kv[1], "true"); - } else { - (*list)[id].tab[idx].flag = 3; - (*list)[id].tab[idx].value.str = calloc(strlen(kv[1]) + 1, sizeof(char)); - strcpy((*list)[id].tab[idx].value.str, kv[1]); - } - free(kv[1]); - free(kv); - return 0; -} - -static char **getkv(char *pair) -{ - char **kv = calloc(2, sizeof(char *)); - int i = 0; - while (pair[i] != ':' && i < strlen(pair)) - i++; - if (i >= strlen(pair)) { - free(kv); - return NULL; - } - kv[0] = calloc(i + 1, sizeof(char)); - strncpy(kv[0], pair, i); - kv[1] = calloc(strlen(pair) - i, sizeof(char)); - strcpy(kv[1], pair + i + 1); - return kv; -} - -static struct params *pass(mtx_t *mtx, tablist_t **copy, char *pair, int id) -{ - struct params *p = calloc(1, sizeof(struct params)); - p->mtx = mtx; - p->copy = copy; - p->pair = pair; - p->id = id; - return p; -} diff --git a/src/lib/utils.c b/src/lib/utils.c deleted file mode 100644 index 909c123..0000000 --- a/src/lib/utils.c +++ /dev/null @@ -1,71 +0,0 @@ -#include -#include - -#include "utils.h" - -static int delkey(tablist_t *, int, char *); - -void dellist(tablist_t *list) -{ - for (int i = 0; i < list[0].len; ++i) { - tablist_t *indexes = getkeys(list, i, NULL, 0); - for (int j = 0; indexes[0].tab[j].flag; ++j) - delkey(list, i, indexes[0].tab[j].key); - free(indexes); - } -} - -int hash(char *key) -{ - unsigned long h = 5381; - for (int i = 0; i < strlen(key); ++i) - h = ((h << 5) + h) + key[i]; - return h % TABLEN; -} - -tablist_t *copytab(tablist_t *dst, tablist_t *src) -{ - if (dst == NULL) - return NULL; - dst[0].len = src[0].len; - for (int i = 0; i < src[0].len; ++i) { - for (int j = 0; j < TABLEN; ++j) { - dst[i].tab[j] = (tabidx_t) { NULL, 0, { 0 } }; - if (src[i].tab[j].flag) { - switch (src[i].tab[j].flag) { - case 3: - dst[i].tab[j].value.str = - calloc(strlen(src[i].tab[j].value.str) + 1, sizeof(char)); - strcpy(dst[i].tab[j].value.str, src[i].tab[j].value.str); - break; - default: - dst[i].tab[j].value = src[i].tab[j].value; - break; - } - dst[i].tab[j].flag = src[i].tab[j].flag; - dst[i].tab[j].key = calloc(strlen(src[i].tab[j].key) + 1, sizeof(char)); - strcpy(dst[i].tab[j].key, src[i].tab[j].key); - } - } - } - return dst; -} - -static int delkey(tablist_t *list, int id, char *key) -{ - int idx = hash(key); - if (list[id].tab[idx].key == NULL) - return 1; - while (strcmp(list[id].tab[idx].key, key) && idx < TABLEN) - idx++; - if (idx >= TABLEN) - return 2; - free(list[id].tab[idx].key); - list[id].tab[idx].key = NULL; - if (list[id].tab[idx].flag == 3) { - free(list[id].tab[idx].value.str); - list[id].tab[idx].value.str = NULL; - } - list[id].tab[idx].flag = 0; - return 0; -} diff --git a/src/lib/utils.h b/src/lib/utils.h deleted file mode 100644 index 99a8efa..0000000 --- a/src/lib/utils.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef UTILS_H -#define UTILS_H - -#include "mdb.h" - -// dellist: deletes the provided table -void dellist(tablist_t *list); - -/* hash: calculates the DJB2 hash of a string, - * and returns that mod TABLEN */ -int hash(char *str); - -// copytab: copys table src into table dst -tablist_t *copytab(tablist_t *dst, tablist_t *src); - -#endif -- cgit v1.2.3