Name Vega's parts: lib/, surfaces/ and symbols/

src/ held two parts, the surfaces that show modules to people and the
symbol format with its CPU and GPU drawing. As in Pure (design 009), top
level directories are now the parts, and the README says what each builds.

1 files changed, 0 insertions, 70 deletions

diff --git a/src/width.c b/src/width.c
deleted file mode 100644
index 1e893f6..0000000
--- a/src/width.c
+++ /dev/null
@@ -1,70 +0,0 @@
-#include "vega.h"
-
-typedef struct { uint32_t first, last; } Range;
-
-/* Zero-width: combining marks, Hangul vowel and final jamo, joiners,
- * variation selectors, format characters. */
-static const Range zero[] = {
-    {0x0300, 0x036F}, {0x0483, 0x0489}, {0x0591, 0x05BD}, {0x0610, 0x061A}, {0x064B, 0x065F}, {0x0E31, 0x0E31},
-    {0x0E34, 0x0E3A}, {0x0E47, 0x0E4E}, {0x1160, 0x11FF}, {0x1AB0, 0x1AFF}, {0x1DC0, 0x1DFF}, {0x200B, 0x200F},
-    {0x202A, 0x202E}, {0x2060, 0x2064}, {0x20D0, 0x20FF}, {0x302A, 0x302F}, {0x3099, 0x309A}, {0xD7B0, 0xD7FF},
-    {0xFE00, 0xFE0F}, {0xFE20, 0xFE2F}, {0xFEFF, 0xFEFF}, {0x1F3FB, 0x1F3FF}, {0xE0000, 0xE0FFF},
-};
-
-/* East Asian Wide and Fullwidth, and emoji shown as pictures. */
-static const Range wide[] = {
-    {0x1100, 0x115F}, {0x231A, 0x231B}, {0x2329, 0x232A}, {0x23E9, 0x23EC}, {0x23F0, 0x23F0}, {0x23F3, 0x23F3},
-    {0x25FD, 0x25FE}, {0x2614, 0x2615}, {0x2648, 0x2653}, {0x267F, 0x267F}, {0x2693, 0x2693}, {0x26A1, 0x26A1},
-    {0x26AA, 0x26AB}, {0x26BD, 0x26BE}, {0x26C4, 0x26C5}, {0x26CE, 0x26CE}, {0x26D4, 0x26D4}, {0x26EA, 0x26EA},
-    {0x26F2, 0x26F3}, {0x26F5, 0x26F5}, {0x26FA, 0x26FA}, {0x26FD, 0x26FD}, {0x2705, 0x2705}, {0x270A, 0x270B},
-    {0x2728, 0x2728}, {0x274C, 0x274C}, {0x274E, 0x274E}, {0x2753, 0x2755}, {0x2757, 0x2757}, {0x2795, 0x2797},
-    {0x27B0, 0x27B0}, {0x27BF, 0x27BF}, {0x2B1B, 0x2B1C}, {0x2B50, 0x2B50}, {0x2B55, 0x2B55}, {0x2E80, 0x303E},
-    {0x3041, 0x33FF}, {0x3400, 0x4DBF}, {0x4E00, 0x9FFF}, {0xA000, 0xA4CF}, {0xA960, 0xA97F}, {0xAC00, 0xD7A3},
-    {0xF900, 0xFAFF}, {0xFE10, 0xFE19}, {0xFE30, 0xFE6F}, {0xFF00, 0xFF60}, {0xFFE0, 0xFFE6}, {0x16FE0, 0x16FE4},
-    {0x17000, 0x18CFF}, {0x1B000, 0x1B2FF}, {0x1F004, 0x1F004}, {0x1F0CF, 0x1F0CF}, {0x1F18E, 0x1F18E},
-    {0x1F191, 0x1F19A}, {0x1F200, 0x1F251}, {0x1F300, 0x1F64F}, {0x1F680, 0x1F6FF}, {0x1F7E0, 0x1F7EB},
-    {0x1F90C, 0x1F9FF}, {0x1FA70, 0x1FAFF}, {0x20000, 0x2FFFD}, {0x30000, 0x3FFFD},
-};
-
-static bool in(const Range *ranges, size_t count, uint32_t codepoint) {
-    size_t low = 0, high = count;
-    while (low < high) {
-        size_t middle = (low + high) / 2;
-        if (codepoint < ranges[middle].first) high = middle;
-        else if (codepoint > ranges[middle].last) low = middle + 1;
-        else return true;
-    }
-    return false;
-}
-
-unsigned vega_width(uint32_t codepoint) {
-    if (in(zero, sizeof(zero) / sizeof(*zero), codepoint)) return 0;
-    return in(wide, sizeof(wide) / sizeof(*wide), codepoint) ? 2 : 1;
-}
-
-uint32_t vega_visible(uint32_t codepoint) {
-    if (codepoint < 0x20) return 0x2400 + codepoint;
-    if (codepoint == 0x7F) return 0x2421;
-    if (codepoint >= 0x80 && codepoint < 0xA0) return 0xFFFD;
-    return codepoint;
-}
-
-size_t vega_decode(const char *text, size_t length, size_t at, uint32_t *codepoint) {
-    const unsigned char *p = (const unsigned char *)text + at;
-    size_t left = length - at, need = p[0] < 0x80 ? 1 : p[0] < 0xE0 ? 2 : p[0] < 0xF0 ? 3 : 4;
-    if (need > left) { *codepoint = 0xFFFD; return left; }
-    uint32_t value = need == 1 ? p[0] : need == 2 ? p[0] & 0x1Fu : need == 3 ? p[0] & 0x0Fu : p[0] & 0x07u;
-    for (size_t i = 1; i < need; ++i) value = value << 6 | (p[i] & 0x3Fu);
-    *codepoint = value;
-    return need;
-}
-
-unsigned vega_text_width(const char *text, size_t length) {
-    unsigned width = 0;
-    for (size_t at = 0; at < length;) {
-        uint32_t codepoint;
-        at += vega_decode(text, length, at, &codepoint);
-        width += vega_width(vega_visible(codepoint));
-    }
-    return width;
-}