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Add more documentation to redbean

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This change also improves the unix module, adding a reboot() system call
for fun and profit, fixing the execve() api, and a printimage release.
This commit is contained in:
Justine Tunney 2022-04-21 04:01:42 -07:00
parent 87396f43bc
commit 9bfa6ec06e
16 changed files with 498 additions and 133 deletions
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31
tool/viz/printimage.c
View file

@ -53,12 +53,15 @@
#include "third_party/stb/stb_image.h"
#include "tool/viz/lib/graphic.h"
STATIC_YOINK("__zipos_get");
static struct Flags {
const char *out;
bool subpixel;
bool unsharp;
bool dither;
bool ruler;
bool magikarp;
bool trailingnewline;
long half;
bool full;
@ -85,6 +88,7 @@ FLAGS\n\
-f display full size\n\
-s unsharp sharpening\n\
-x xterm256 color mode\n\
-m use magikarp scaling\n\
-d hilbert curve dithering\n\
-r display pixel ruler on sides\n\
-p convert to subpixel layout\n\
@ -94,7 +98,6 @@ FLAGS\n\
EXAMPLES\n\
\n\
printimage.com -sxd lemurs.jpg # 256-color dither unsharp\n\
\n\
\n");
exit(rc);
}
@ -118,7 +121,7 @@ static void GetOpts(int *argc, char *argv[]) {
(strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-help") == 0)) {
PrintUsage(EXIT_SUCCESS, stdout);
}
while ((opt = getopt(*argc, argv, "?vpfrtxads234o:w:h:")) != -1) {
while ((opt = getopt(*argc, argv, "?vpmfrtxads234o:w:h:")) != -1) {
switch (opt) {
case 'o':
g_flags.out = optarg;
@ -146,6 +149,9 @@ static void GetOpts(int *argc, char *argv[]) {
case 'r':
g_flags.ruler = true;
break;
case 'm':
g_flags.magikarp = true;
break;
case 'p':
g_flags.subpixel = true;
break;
@ -173,10 +179,6 @@ static void GetOpts(int *argc, char *argv[]) {
PrintUsage(EX_USAGE, stderr);
}
}
if (optind == *argc) {
if (!g_flags.out) g_flags.out = "-";
argv[(*argc)++] = "-";
}
if (!g_flags.full && (!g_flags.width || !g_flags.width)) {
ws.ws_col = 80;
ws.ws_row = 24;
@ -398,6 +400,22 @@ void WithImageFile(const char *path,
sxn = xn;
dyn = g_flags.height;
dxn = g_flags.width;
if (g_flags.magikarp) {
while (HALF(syn) > dyn || HALF(sxn) > dxn) {
if (HALF(sxn) > dxn) {
Magikarp2xX(yn, xn, data, syn, sxn);
Magikarp2xX(yn, xn, (char *)data + yn * xn, syn, sxn);
Magikarp2xX(yn, xn, (char *)data + yn * xn * 2, syn, sxn);
sxn = HALF(sxn);
}
if (HALF(syn) > dyn) {
Magikarp2xY(yn, xn, data, syn, sxn);
Magikarp2xY(yn, xn, (char *)data + yn * xn, syn, sxn);
Magikarp2xY(yn, xn, (char *)data + yn * xn * 2, syn, sxn);
syn = HALF(syn);
}
}
}
data = EzGyarados(3, dyn, dxn, gc(memalign(32, dyn * dxn * 3)), cn, yn, xn,
data, 0, cn, dyn, dxn, syn, sxn, 0, 0, 0, 0);
yn = dyn;
@ -410,6 +428,7 @@ int main(int argc, char *argv[]) {
int i;
ShowCrashReports();
GetOpts(&argc, argv);
if (optind == argc) PrintUsage(0, stdout);
stbi_set_unpremultiply_on_load(true);
for (i = optind; i < argc; ++i) {
WithImageFile(argv[i], ProcessImage);