63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
#define CUSTOM_STRING_MAX_LEN 64
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typedef struct {
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char buffer[CUSTOM_STRING_MAX_LEN];
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int length; // current string length, excluding null terminator
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} String;
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// Initialize String to empty
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void cs_init(String* cs)
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{
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cs->buffer[0] = '\0';
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cs->length = 0;
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}
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// Set content from a C-string (truncates if needed)
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void cs_set(String* cs, const char* src)
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{
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int i = 0;
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while (src[i] != '\0' && i < (CUSTOM_STRING_MAX_LEN - 1))
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{
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cs->buffer[i] = src[i];
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i++;
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}
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cs->buffer[i] = '\0';
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cs->length = i;
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}
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// Compare two Strings for equality
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int cs_equal(const String* a, const String* b)
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{
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if (a->length != b->length)
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return 0;
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for (int i = 0; i < a->length; i++)
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{
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if (a->buffer[i] != b->buffer[i])
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return 0;
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}
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return 1;
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}
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// Check if String starts with another String prefix
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int cs_starts_with(const String* cs, const String* prefix)
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{
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if (prefix->length > cs->length)
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return 0;
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for (int i = 0; i < prefix->length; i++)
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{
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if (cs->buffer[i] != prefix->buffer[i])
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return 0;
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}
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return 1;
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}
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// Append a char to String (ignores if full)
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void cs_append_char(String* cs, char c)
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{
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if (cs->length < (CUSTOM_STRING_MAX_LEN - 1))
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{
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cs->buffer[cs->length++] = c;
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cs->buffer[cs->length] = '\0';
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}
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}
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