mirror of
https://github.com/Ed94/gencpp.git
synced 2024-12-22 15:54:45 -08:00
601 lines
18 KiB
C++
601 lines
18 KiB
C++
#ifdef GEN_INTELLISENSE_DIRECTIVES
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# pragma once
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# include "hashing.hpp"
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#endif
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#pragma region Strings
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// Constant string with length.
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struct StrC
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{
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ssize Len;
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char const* Ptr;
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#if ! GEN_COMPILER_C
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operator char const* () const { return Ptr; }
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char const& operator[]( ssize index ) const { return Ptr[index]; }
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#endif
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};
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#define cast_to_strc( str ) * rcast( StrC*, (str) - sizeof(ssize) )
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#define txt( text ) StrC { sizeof( text ) - 1, ( text ) }
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inline
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StrC to_str( char const* str ) {
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return { str_len( str ), str };
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}
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// Dynamic String
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// This is directly based off the ZPL string api.
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// They used a header pattern
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// I kept it for simplicty of porting but its not necessary to keep it that way.
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#pragma region String
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struct StringHeader;
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struct String;
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usize string_grow_formula(usize value);
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String string_make (AllocatorInfo allocator, char const* str);
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String string_make (AllocatorInfo allocator, StrC str);
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String string_make_reserve (AllocatorInfo allocator, ssize capacity);
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String string_make_length (AllocatorInfo allocator, char const* str, ssize length);
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String string_fmt (AllocatorInfo allocator, char* buf, ssize buf_size, char const* fmt, ...);
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String string_fmt_buf (AllocatorInfo allocator, char const* fmt, ...);
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String string_join (AllocatorInfo allocator, char const** parts, ssize num_parts, char const* glue);
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bool are_equal (String const lhs, String const rhs);
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bool are_equal (String const lhs, StrC rhs);
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bool make_space_for (String* str, char const* to_append, ssize add_len);
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bool append (String* str, char c);
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bool append (String* str, char const* str_to_append);
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bool append (String* str, char const* str_to_append, ssize length);
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bool append (String* str, StrC str_to_append);
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bool append (String* str, String const other);
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bool append_fmt (String* str, char const* fmt, ...);
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ssize avail_space (String const str);
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char* back (String str);
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bool contains (String const str, StrC substring);
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bool contains (String const str, String const substring);
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ssize capacity (String const str);
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void clear (String str);
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String duplicate (String const str, AllocatorInfo allocator);
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void free (String* str);
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StringHeader* get_header (String str);
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ssize length (String const str);
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b32 starts_with (String const str, StrC substring);
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b32 starts_with (String const str, String substring);
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void skip_line (String str);
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void strip_space (String str);
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void trim (String str, char const* cut_set);
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void trim_space (String str);
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String visualize_whitespace(String const str);
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struct StringHeader {
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AllocatorInfo Allocator;
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ssize Capacity;
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ssize Length;
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};
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#if ! GEN_COMPILER_C
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struct String
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{
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char* Data;
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forceinline operator bool() { return Data != nullptr; }
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forceinline operator char*() { return Data; }
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forceinline operator char const*() const { return Data; }
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forceinline operator StrC() const { return { GEN_NS length(* this), Data }; }
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String const& operator=(String const& other) const {
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if (this == &other)
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return *this;
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String* this_ = ccast(String*, this);
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this_->Data = other.Data;
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return *this;
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}
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forceinline char& operator[](ssize index) { return Data[index]; }
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forceinline char const& operator[](ssize index) const { return Data[index]; }
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forceinline char* begin() const { return Data; }
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forceinline char* end() const { return Data + GEN_NS length(* this); }
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#if GEN_SUPPORT_CPP_MEMBER_FEATURES
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#pragma region Member Mapping
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forceinline static String make(AllocatorInfo allocator, char const* str) { return GEN_NS string_make(allocator, str); }
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forceinline static String make(AllocatorInfo allocator, StrC str) { return GEN_NS string_make(allocator, str); }
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forceinline static String make_reserve(AllocatorInfo allocator, ssize cap) { return GEN_NS string_make_reserve(allocator, cap); }
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forceinline static String make_length(AllocatorInfo a, char const* s, ssize l) { return GEN_NS string_make_length(a, s, l); }
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forceinline static String join(AllocatorInfo a, char const** p, ssize n, char const* g) { return GEN_NS string_join(a, p, n, g); }
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forceinline static usize grow_formula(usize value) { return GEN_NS string_grow_formula(value); }
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static
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String fmt(AllocatorInfo allocator, char* buf, ssize buf_size, char const* fmt, ...) {
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va_list va;
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va_start(va, fmt);
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str_fmt_va(buf, buf_size, fmt, va);
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va_end(va);
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return GEN_NS string_make(allocator, buf);
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}
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static
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String fmt_buf(AllocatorInfo allocator, char const* fmt, ...) {
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local_persist thread_local
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char buf[GEN_PRINTF_MAXLEN] = { 0 };
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va_list va;
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va_start(va, fmt);
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str_fmt_va(buf, GEN_PRINTF_MAXLEN, fmt, va);
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va_end(va);
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return GEN_NS string_make(allocator, buf);
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}
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forceinline bool make_space_for(char const* str, ssize add_len) { return GEN_NS make_space_for(this, str, add_len); }
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forceinline bool append(char c) { return GEN_NS append(this, c); }
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forceinline bool append(char const* str) { return GEN_NS append(this, str); }
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forceinline bool append(char const* str, ssize length) { return GEN_NS append(this, str, length); }
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forceinline bool append(StrC str) { return GEN_NS append(this, str); }
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forceinline bool append(const String other) { return GEN_NS append(this, other); }
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forceinline ssize avail_space() const { return GEN_NS avail_space(* this); }
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forceinline char* back() { return GEN_NS back(* this); }
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forceinline bool contains(StrC substring) const { return GEN_NS contains(* this, substring); }
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forceinline bool contains(String const& substring) const { return GEN_NS contains(* this, substring); }
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forceinline ssize capacity() const { return GEN_NS capacity(* this); }
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forceinline void clear() { GEN_NS clear(* this); }
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forceinline String duplicate(AllocatorInfo allocator) const { return GEN_NS duplicate(* this, allocator); }
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forceinline void free() { GEN_NS free(this); }
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forceinline bool is_equal(String const& other) const { return GEN_NS are_equal(* this, other); }
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forceinline bool is_equal(StrC other) const { return GEN_NS are_equal(* this, other); }
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forceinline ssize length() const { return GEN_NS length(* this); }
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forceinline b32 starts_with(StrC substring) const { return GEN_NS starts_with(* this, substring); }
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forceinline b32 starts_with(String substring) const { return GEN_NS starts_with(* this, substring); }
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forceinline void skip_line() { GEN_NS skip_line(* this); }
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forceinline void strip_space() { GEN_NS strip_space(* this); }
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forceinline void trim(char const* cut_set) { GEN_NS trim(* this, cut_set); }
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forceinline void trim_space() { GEN_NS trim_space(* this); }
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forceinline String visualize_whitespace() const { return GEN_NS visualize_whitespace(* this); }
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forceinline StringHeader& get_header() { return * GEN_NS get_header(* this); }
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bool append_fmt(char const* fmt, ...) {
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ssize res;
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char buf[GEN_PRINTF_MAXLEN] = { 0 };
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va_list va;
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va_start(va, fmt);
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res = str_fmt_va(buf, count_of(buf) - 1, fmt, va) - 1;
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va_end(va);
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return GEN_NS append(this, buf, res);
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}
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#pragma endregion Member Mapping
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#endif
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};
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#endif
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#if GEN_SUPPORT_CPP_REFERENCES
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bool make_space_for(String& str, char const* to_append, ssize add_len);
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bool append(String& str, char c);
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bool append(String& str, char const* str_to_append);
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bool append(String& str, char const* str_to_append, ssize length);
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bool append(String& str, StrC str_to_append);
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bool append(String& str, const String other);
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bool append_fmt(String& str, char const* fmt, ...);
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char& back(String& str);
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void clear(String& str);
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void free(String& str);
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#endif
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inline char* begin(String& str) { return str; }
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inline char* end(String& str) { return scast(char*, str) + length(str); }
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inline char* next(String& str) { return scast(char*, str) + 1; }
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inline
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usize string_grow_formula(usize value) {
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// Using a very aggressive growth formula to reduce time mem_copying with recursive calls to append in this library.
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return 4 * value + 8;
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}
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inline
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String string_make(AllocatorInfo allocator, char const* str) {
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ssize length = str ? str_len(str) : 0;
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return string_make_length(allocator, str, length);
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}
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inline
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String string_make(AllocatorInfo allocator, StrC str) {
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return string_make_length(allocator, str.Ptr, str.Len);
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}
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inline
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String string_fmt(AllocatorInfo allocator, char* buf, ssize buf_size, char const* fmt, ...) {
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va_list va;
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va_start(va, fmt);
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str_fmt_va(buf, buf_size, fmt, va);
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va_end(va);
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return string_make(allocator, buf);
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}
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inline
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String string_fmt_buf(AllocatorInfo allocator, char const* fmt, ...)
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{
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local_persist thread_local
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char buf[GEN_PRINTF_MAXLEN] = { 0 };
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va_list va;
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va_start(va, fmt);
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str_fmt_va(buf, GEN_PRINTF_MAXLEN, fmt, va);
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va_end(va);
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return string_make(allocator, buf);
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}
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inline
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String string_join(AllocatorInfo allocator, char const** parts, ssize num_parts, char const* glue)
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{
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String result = string_make(allocator, "");
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for (ssize idx = 0; idx < num_parts; ++idx)
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{
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append(& result, parts[idx]);
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if (idx < num_parts - 1)
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append(& result, glue);
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}
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return result;
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}
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inline
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bool append(String* str, char c) {
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GEN_ASSERT(str != nullptr);
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return append(str, &c, 1);
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}
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inline
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bool append(String* str, char const* str_to_append) {
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GEN_ASSERT(str != nullptr);
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return append(str, str_to_append, str_len(str_to_append));
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}
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inline
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bool append(String* str, char const* str_to_append, ssize append_length)
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{
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GEN_ASSERT(str != nullptr);
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if (sptr(str_to_append) > 0)
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{
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ssize curr_len = length(* str);
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if ( ! make_space_for(str, str_to_append, append_length))
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return false;
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StringHeader* header = get_header(* str);
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char* Data = * str;
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mem_copy( Data + curr_len, str_to_append, append_length);
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Data[curr_len + append_length] = '\0';
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header->Length = curr_len + append_length;
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}
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return str_to_append != nullptr;
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}
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inline
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bool append(String* str, StrC str_to_append) {
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GEN_ASSERT(str != nullptr);
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return append(str, str_to_append.Ptr, str_to_append.Len);
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}
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inline
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bool append(String* str, const String other) {
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GEN_ASSERT(str != nullptr);
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return append(str, other, length(other));
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}
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bool append_fmt(String* str, char const* fmt, ...) {
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GEN_ASSERT(str != nullptr);
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ssize res;
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char buf[GEN_PRINTF_MAXLEN] = { 0 };
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va_list va;
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va_start(va, fmt);
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res = str_fmt_va(buf, count_of(buf) - 1, fmt, va) - 1;
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va_end(va);
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return append(str, buf, res);
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}
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inline
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bool are_equal(String const lhs, String const rhs)
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{
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if (length(lhs) != length(rhs))
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return false;
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for (ssize idx = 0; idx < length(lhs); ++idx)
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if (lhs[idx] != rhs[idx])
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return false;
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return true;
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}
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inline
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bool are_equal(String const lhs, StrC rhs)
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{
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if (length(lhs) != (rhs.Len))
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return false;
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for (ssize idx = 0; idx < length(lhs); ++idx)
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if (lhs[idx] != rhs.Ptr[idx])
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return false;
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return true;
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}
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inline
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ssize avail_space(String const str) {
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StringHeader const* header = rcast(StringHeader const*, scast(char const*, str) - sizeof(StringHeader));
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return header->Capacity - header->Length;
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}
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inline
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char* back(String* str) {
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return & (*str)[length(* str) - 1];
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}
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inline
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bool contains(String const str, StrC substring)
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{
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StringHeader const* header = rcast(StringHeader const*, scast(char const*, str) - sizeof(StringHeader));
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if (substring.Len > header->Length)
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return false;
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ssize main_len = header->Length;
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ssize sub_len = substring.Len;
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for (ssize idx = 0; idx <= main_len - sub_len; ++idx)
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{
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if (str_compare(str + idx, substring.Ptr, sub_len) == 0)
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return true;
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}
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return false;
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}
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inline
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bool contains(String const str, String const substring)
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{
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StringHeader const* header = rcast(StringHeader const*, scast(char const*, str) - sizeof(StringHeader));
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if (length(substring) > header->Length)
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return false;
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ssize main_len = header->Length;
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ssize sub_len = length(substring);
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for (ssize idx = 0; idx <= main_len - sub_len; ++idx)
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{
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if (str_compare(str + idx, substring, sub_len) == 0)
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return true;
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}
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return false;
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}
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inline
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ssize capacity(String const str) {
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StringHeader const* header = rcast(StringHeader const*, scast(char const*, str) - sizeof(StringHeader));
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return header->Capacity;
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}
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inline
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void clear(String str) {
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get_header(str)->Length = 0;
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}
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inline
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String duplicate(String const str, AllocatorInfo allocator) {
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return string_make_length(allocator, str, length(str));
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}
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inline
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void free(String* str) {
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GEN_ASSERT(str != nullptr);
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if (! (* str))
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return;
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StringHeader* header = get_header(* str);
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GEN_NS free(header->Allocator, header);
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}
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inline
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StringHeader* get_header(String str) {
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return (StringHeader*)(scast(char*, str) - sizeof(StringHeader));
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}
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inline
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ssize length(String const str)
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{
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StringHeader const& header = *rcast(StringHeader const*, scast(char const*, str) - sizeof(StringHeader));
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return header.Length;
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}
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inline
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bool make_space_for(String* str, char const* to_append, ssize add_len)
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{
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ssize available = avail_space(* str);
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if (available >= add_len) {
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return true;
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}
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else
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{
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ssize new_len, old_size, new_size;
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void* ptr;
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void* new_ptr;
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AllocatorInfo allocator = get_header(* str)->Allocator;
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StringHeader* header = nullptr;
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new_len = string_grow_formula(length(* str) + add_len);
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ptr = get_header(* str);
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old_size = size_of(StringHeader) + length(* str) + 1;
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new_size = size_of(StringHeader) + new_len + 1;
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new_ptr = resize(allocator, ptr, old_size, new_size);
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if (new_ptr == nullptr)
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return false;
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header = rcast(StringHeader*, new_ptr);
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header->Allocator = allocator;
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header->Capacity = new_len;
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char** Data = rcast(char**, str);
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* Data = rcast(char*, header + 1);
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return true;
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}
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}
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inline
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b32 starts_with(String const str, StrC substring) {
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if (substring.Len > length(str))
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return false;
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b32 result = str_compare(str.Data, substring.Ptr, substring.Len) == 0;
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return result;
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}
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inline
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b32 starts_with(String const str, String substring) {
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if (length(substring) > length(str))
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return false;
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b32 result = str_compare(str.Data, substring.Data, length(substring) - 1) == 0;
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return result;
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}
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inline
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void skip_line(String str)
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{
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#define current (*scanner)
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char* scanner = str.Data;
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while (current != '\r' && current != '\n') {
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++scanner;
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}
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s32 new_length = scanner - str.Data;
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if (current == '\r') {
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new_length += 1;
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}
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mem_move(str.Data, scanner, new_length);
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StringHeader* header = get_header(str);
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header->Length = new_length;
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#undef current
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}
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inline
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void strip_space(String str)
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{
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char* write_pos = str;
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char* read_pos = str;
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while (* read_pos)
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{
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if (! char_is_space(* read_pos))
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{
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* write_pos = * read_pos;
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write_pos++;
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}
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read_pos++;
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}
|
|
|
|
write_pos[0] = '\0'; // Null-terminate the modified string
|
|
|
|
// Update the length if needed
|
|
get_header(str)->Length = write_pos - str.Data;
|
|
}
|
|
|
|
inline
|
|
void trim(String str, char const* cut_set)
|
|
{
|
|
ssize len = 0;
|
|
|
|
char* start_pos = str.Data;
|
|
char* end_pos = str.Data + length(str) - 1;
|
|
|
|
while (start_pos <= end_pos && char_first_occurence(cut_set, *start_pos))
|
|
start_pos++;
|
|
|
|
while (end_pos > start_pos && char_first_occurence(cut_set, *end_pos))
|
|
end_pos--;
|
|
|
|
len = scast(ssize, (start_pos > end_pos) ? 0 : ((end_pos - start_pos) + 1));
|
|
|
|
if (str.Data != start_pos)
|
|
mem_move(str.Data, start_pos, len);
|
|
|
|
str.Data[len] = '\0';
|
|
|
|
get_header(str)->Length = len;
|
|
}
|
|
|
|
inline
|
|
void trim_space(String str) {
|
|
trim(str, " \t\r\n\v\f");
|
|
}
|
|
|
|
inline
|
|
String visualize_whitespace(String const str)
|
|
{
|
|
StringHeader* header = (StringHeader*)(scast(char const*, str) - sizeof(StringHeader));
|
|
String result = string_make_reserve(header->Allocator, length(str) * 2); // Assume worst case for space requirements.
|
|
|
|
for (auto c : str) switch (c)
|
|
{
|
|
case ' ':
|
|
append(& result, txt("·"));
|
|
break;
|
|
case '\t':
|
|
append(& result, txt("→"));
|
|
break;
|
|
case '\n':
|
|
append(& result, txt("↵"));
|
|
break;
|
|
case '\r':
|
|
append(& result, txt("⏎"));
|
|
break;
|
|
case '\v':
|
|
append(& result, txt("⇕"));
|
|
break;
|
|
case '\f':
|
|
append(& result, txt("⌂"));
|
|
break;
|
|
default:
|
|
append(& result, c);
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#pragma endregion String
|
|
|
|
struct String_POD {
|
|
char* Data;
|
|
};
|
|
static_assert( sizeof( String_POD ) == sizeof( String ), "String is not a POD" );
|
|
|
|
// Implements basic string interning. Data structure is based off the ZPL Hashtable.
|
|
typedef HashTable<String const> StringTable;
|
|
|
|
// Represents strings cached with the string table.
|
|
// Should never be modified, if changed string is desired, cache_string( str ) another.
|
|
typedef String const StringCached;
|
|
|
|
#pragma endregion Strings
|