Renamed files

1 files changed, 115 insertions, 0 deletions

diff --git a/utils.c b/utils.c
new file mode 100644
index 000000000000..b34625fd7f10
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,115 @@
+#include "utils.h"
+
+String* string_init(void) {
+    String* pString = (String*) malloc(sizeof(String));
+    pointer_alloc_check(pString);
+    pString->len = 0;
+    pString->data = calloc(sizeof(char), 1);
+    pointer_alloc_check(pString->data);
+    return pString;
+}
+
+void strtolower(char* str) {
+    for (int i = 0; str[i] != '\0'; i++)
+        str[i] = (char) tolower(str[i]);
+}
+
+void strtoupper(char* str) {
+    for (int i = 0; str[i] != '\0'; i++)
+        str[i] = (char) toupper(str[i]);
+}
+
+char* strip_char(char* string, char c) {
+    size_t len = strlen(string);
+    int i, j;
+    for (i = 0, j = 0; j < (int) len; i++, j++) {
+        while (string[j] == c)
+            j++;
+        string[i] = string[j];
+    }
+    string[i] = '\0';
+    return string;
+}
+
+char* strip_tags(char* string) {
+    size_t len = strlen(string);
+    int i, j;
+    for (i = 0, j = 0; j < (int) len; i++, j++) {
+        if (string[j] == '<')
+            while (string[j] != '>')
+                j++;
+        string[i] = string[j];
+    }
+    string[i] = '\0';
+    return string;
+}
+
+String* file_get_string(char* file_name) {
+    struct stat file_info;
+    if (stat(file_name, &file_info)) // If called from portfolio_modify_string, file should exist (possibly size 0)
+        RETNULL_MSG("File doesn't exist.");
+
+    if (file_info.st_size == 0) // Return new String if new file
+        return string_init();
+
+    FILE* fp = fopen(file_name, "r");
+    if (fp == NULL) // If file exists, but cannot be opened, usually because of permissions
+        RETNULL_MSG("Error opening file.")
+
+    String* pString = string_init();
+    pString->len = (size_t) file_info.st_size;
+    pString->data = realloc(pString->data, pString->len + 1); // Alloc with file size
+    pointer_alloc_check(pString->data);
+    pString->data[pString->len] = '\0';
+    if (fread(pString->data, sizeof(char), pString->len, fp) != pString->len) { // read file and return NULL if error
+        fclose(fp);
+        string_destroy(&pString);
+        RETNULL_MSG("Error reading file.")
+    }
+
+    fclose(fp);
+    return pString;
+}
+
+void string_write_file(String* pString, char* file_name) {
+    FILE* fp = fopen(file_name, "w");
+    if (fp == NULL)
+        RET_MSG("Error opening file.")
+    if (fwrite(pString->data, sizeof(char), pString->len, fp) != pString->len)
+        puts("Error writing file.");
+    fclose(fp);
+}
+
+void string_destroy(String** phString) {
+    if (*phString == NULL)
+        return;
+
+    String* pString = *phString;
+    free(pString->data);
+    free(*phString);
+    *phString = NULL;
+}
+
+void pointer_alloc_check(void* alloced) {
+    if (alloced == NULL)
+        EXIT_MSG("alloc failed!")
+}
+
+int is_string_json_array(const String* pString) {
+    Json* jobj = json_tokener_parse(pString->data);
+    int formatted = jobj != NULL && json_object_is_type(jobj, json_type_array);
+    json_object_put(jobj);
+    return formatted;
+}
+
+int is_str_number(const char* string) {
+    size_t len = strlen(string);
+    if (len == 0)
+        return 0;
+
+    for (size_t i = 0; i < len; i++)
+        if (!isdigit(string[i]))
+            return 0;
+
+    return 1;
+}
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