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src/std/string.c

@@ -0,0 +1,115 @@
+#include "arc/std/string.h"
+
+#include "arc/std/errno.h"
+#include <string.h>
+#include <stdlib.h>
+
+uint8_t ARC_String_Alpha(char *val, uint64_t length){
+    for(; length; length--){
+        if(val[length - 1] >= 'a' && val[length - 1] <= 'z'){ continue; }
+        if(val[length - 1] >= 'A' && val[length - 1] <= 'Z'){ continue; }
+        return 1;
+    }
+    return 0;
+}
+
+uint64_t ARC_String_ToUint64_t(const char *data, ARC_StringSubstr *substr){
+    char temp[substr->length + 1];
+    strncpy(temp, data + substr->index, substr->length);
+    temp[substr->length] = '\0';
+
+    return (uint64_t) strtoul(temp, NULL, 10);
+}
+
+int32_t ARC_String_Find(char *data, char *substr, uint64_t *index){
+    if(!data || !substr){ return ARC_ERRNO_NULL; }
+
+    uint64_t max = strlen(data);
+    uint64_t sub = strlen(substr);
+    if(!max || !sub || sub > max){ return ARC_ERRNO_DATA; }
+
+    max -= sub - 1;
+    for(uint64_t i = 0; max; i++, max--){
+        if(!strncmp(data + i, substr, sub)){
+            *index = i;
+            return 0;
+        }
+    }
+
+    *index = ~((uint64_t)0);
+    return 0;
+}
+
+int32_t ARC_String_FindBack(char *data, char *substr, uint64_t *index){
+    if(!data || !substr){ return ARC_ERRNO_NULL; }
+
+    uint64_t max = strlen(data);
+    uint64_t sub = strlen(substr);
+    if(!max || !sub || sub > max){ return ARC_ERRNO_DATA; }
+
+    max -= sub - 1;
+    for(; max; max--){
+        if(!strncmp(data + (max - 1), substr, sub)){
+            *index = max;
+            return 0;
+        }
+    }
+
+    *index = ~((uint64_t)0);
+    return 0;
+}
+
+int32_t ARC_StringSubstr_StripEnds(char *data, char *substr, ARC_StringSubstr *subdata){
+    if(!subdata){ return ARC_ERRNO_NULL; }
+    if(!substr){ substr = (char *)" "; }
+
+    subdata->length = (subdata->length)? subdata->length : strlen(data);
+    uint64_t max = subdata->length;
+    uint64_t sub = strlen(substr);
+    if(!max || !sub || sub > max){ return ARC_ERRNO_DATA; }
+
+    max -= sub - 1;
+    for(; max; max--){
+        if(strncmp(data + subdata->index + (max - 1), substr, sub)){
+            subdata->length = max;
+            break;
+        }
+    }
+
+    max = subdata->length - (sub - 1);
+    for(uint64_t i = 0; max; i++, max--){
+        if(strncmp(data + subdata->index + i, substr, sub)){
+            subdata->index += i;
+            subdata->length -= i;
+            return 0;
+        }
+    }
+
+    return 0;
+}
+
+int32_t ARC_StringSubstr_StripWhitespaceEnds(char *data, ARC_StringSubstr *subdata){
+    if(!subdata){ return ARC_ERRNO_NULL; }
+
+    subdata->length = (subdata->length)? subdata->length : strlen(data);
+    uint64_t max = subdata->length;
+    if(!max){ return ARC_ERRNO_DATA; }
+
+    for(; max; max--){
+        if(data[subdata->index + (max - 1)] != ' ' && data[subdata->index + (max - 1)] != '\n' && data[subdata->index + (max - 1)] != '\t' && data[subdata->index + (max - 1)] != '\r'){
+            subdata->length = max;
+            break;
+        }
+    }
+
+    max = subdata->length;
+    for(uint64_t i = 0; max; i++, max--){
+        if(data[subdata->index + i] != ' ' && data[subdata->index + i] != '\n' && data[subdata->index + i] != '\t' && data[subdata->index + i] != '\r'){
+            subdata->index += i;
+            subdata->length -= i;
+            return 0;
+        }
+    }
+
+    return 0;
+}