Add remaining SV.h functions + test file

nob.c

@@ -21,6 +21,7 @@ const char *test_names[] = {
     "da_append",
     "sb_appendf",
     "da_foreach",
+    "nob_sv_test",
 };
 #define test_names_count ARRAY_LEN(test_names)
 

nob.h

@@ -184,6 +184,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
+#include <stdint.h>
 #include <string.h>
 #include <errno.h>
 #include <ctype.h>
@@ -612,6 +613,25 @@ Nob_String_View nob_sv_from_parts(const char *data, size_t count);
 // nob_sb_to_sv() enables you to just view Nob_String_Builder as Nob_String_View
 #define nob_sb_to_sv(sb) nob_sv_from_parts((sb).items, (sb).count)
 
+Nob_String_View nob_sv_take_left_while(Nob_String_View sv, bool (*predicate)(char x));
+Nob_String_View nob_sv_chop_by_sv(Nob_String_View *sv, Nob_String_View thicc_delim);
+bool nob_sv_try_chop_by_delim(Nob_String_View *sv, char delim, Nob_String_View *chunk);
+Nob_String_View nob_sv_chop_right(Nob_String_View *sv, size_t n);
+Nob_String_View nob_sv_chop_left_while(Nob_String_View *sv, bool (*predicate)(char x));
+bool nob_sv_index_of(Nob_String_View sv, char c, size_t *index);
+bool nob_sv_eq_ignorecase(Nob_String_View a, Nob_String_View b);
+uint64_t nob_sv_to_u64(Nob_String_View sv);
+uint64_t nob_sv_chop_u64(Nob_String_View *sv);
+
+#define SV(cstr_lit) nob_sv_from_parts(cstr_lit, sizeof(cstr_lit) - 1)
+#define SV_STATIC(cstr_lit)   \
+    {                         \
+        sizeof(cstr_lit) - 1, \
+        (cstr_lit)            \
+    }
+
+#define SV_NULL nob_sv_from_parts(NULL, 0)
+
 // printf macros for String_View
 #ifndef SV_Fmt
 #define SV_Fmt "%.*s"
@@ -1762,6 +1782,109 @@ bool nob_sv_end_with(Nob_String_View sv, const char *cstr)
     return false;
 }
 
+Nob_String_View nob_sv_take_left_while(Nob_String_View sv, bool (*predicate)(char x)) {
+    size_t i = 0;
+    while (i < sv.count && predicate(sv.data[i])) {
+        i += 1;
+    }
+    return nob_sv_from_parts(sv.data, i);
+}
+
+Nob_String_View nob_sv_chop_by_sv(Nob_String_View *sv, Nob_String_View thicc_delim) {
+    Nob_String_View window = nob_sv_from_parts(sv->data, thicc_delim.count);
+    size_t i = 0;
+    while (i + thicc_delim.count < sv->count && !(nob_sv_eq(window, thicc_delim))) {
+        i++;
+        window.data++;
+    }
+
+    Nob_String_View result = nob_sv_from_parts(sv->data, i);
+
+    if (i + thicc_delim.count == sv->count) {
+        // include last <thicc_delim.count> characters if they aren't
+        //  equal to thicc_delim
+        result.count += thicc_delim.count;
+    }
+
+    // Chop!
+    sv->data += i + thicc_delim.count;
+    sv->count -= i + thicc_delim.count;
+
+    return result;
+}
+
+bool nob_sv_try_chop_by_delim(Nob_String_View *sv, char delim, Nob_String_View *chunk) {
+    size_t i = 0;
+    while (i < sv->count && sv->data[i] != delim) {
+        i += 1;
+    }
+
+    Nob_String_View result = nob_sv_from_parts(sv->data, i);
+
+    if (i < sv->count) {
+        sv->count -= i + 1;
+        sv->data += i + 1;
+        if (chunk) {
+            *chunk = result;
+        }
+        return true;
+    }
+
+    return false;
+}
+
+Nob_String_View nob_sv_chop_right(Nob_String_View *sv, size_t n) {
+    if (n > sv->count) {
+        n = sv->count;
+    }
+
+    Nob_String_View result = nob_sv_from_parts(sv->data + sv->count - n, n);
+
+    sv->count -= n;
+
+    return result;
+}
+
+Nob_String_View nob_sv_chop_left_while(Nob_String_View *sv, bool (*predicate)(char x)) {
+    size_t i = 0;
+    while (i < sv->count && predicate(sv->data[i])) {
+        i += 1;
+    }
+    return nob_sv_chop_left(sv, i);
+}
+
+bool nob_sv_index_of(Nob_String_View sv, char c, size_t *index) {
+    size_t i = 0;
+    while (i < sv.count && sv.data[i] != c) {
+        i += 1;
+    }
+
+    if (i < sv.count) {
+        if (index) {
+            *index = i;
+        }
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool nob_sv_eq_ignorecase(Nob_String_View a, Nob_String_View b) {
+    if (a.count != b.count) {
+        return false;
+    }
+
+    char x, y;
+    for (size_t i = 0; i < a.count; i++) {
+        x = 'A' <= a.data[i] && a.data[i] <= 'Z' ? a.data[i] + 32 : a.data[i];
+
+        y = 'A' <= b.data[i] && b.data[i] <= 'Z' ? b.data[i] + 32 : b.data[i];
+
+        if (x != y)
+            return false;
+    }
+    return true;
+}
 
 bool nob_sv_starts_with(Nob_String_View sv, Nob_String_View expected_prefix)
 {
@@ -1773,6 +1896,26 @@ bool nob_sv_starts_with(Nob_String_View sv, Nob_String_View expected_prefix)
     return false;
 }
 
+uint64_t nob_sv_to_u64(Nob_String_View sv) {
+    uint64_t result = 0;
+
+    for (size_t i = 0; i < sv.count && isdigit(sv.data[i]); ++i) {
+        result = result * 10 + (uint64_t)sv.data[i] - '0';
+    }
+
+    return result;
+}
+
+uint64_t nob_sv_chop_u64(Nob_String_View *sv) {
+    uint64_t result = 0;
+    while (sv->count > 0 && isdigit(*sv->data)) {
+        result = result * 10 + *sv->data - '0';
+        sv->count -= 1;
+        sv->data += 1;
+    }
+    return result;
+}
+
 // RETURNS:
 //  0 - file does not exists
 //  1 - file exists
@@ -2033,6 +2176,15 @@ int closedir(DIR *dirp)
         #define sv_end_with nob_sv_end_with
         #define sv_from_cstr nob_sv_from_cstr
         #define sv_from_parts nob_sv_from_parts
+        #define sv_take_left_while nob_sv_take_left_while
+        #define sv_chop_by_sv nob_sv_chop_by_sv
+        #define sv_try_chop_by_delim nob_sv_try_chop_by_delim
+        #define sv_chop_right nob_sv_chop_right
+        #define sv_chop_left_while nob_sv_chop_left_while
+        #define sv_index_of nob_sv_index_of
+        #define sv_eq_ignorecase nob_sv_eq_ignorecase
+        #define sv_to_u64 nob_sv_to_u64
+        #define sv_chop_u64 nob_sv_chop_u64
         #define sb_to_sv nob_sb_to_sv
         #define win32_error_message nob_win32_error_message
     #endif // NOB_STRIP_PREFIX