72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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*
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* Kernel Argument Parser
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*
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* Parses arguments passed by, ie, a Multiboot bootloader.
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*
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* Part of the ToAruOS Kernel.
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* (C) 2011 Kevin Lange
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*/
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#include <system.h>
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extern void bochs_install_wallpaper(char *);
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/**
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* Parse the given arguments to the kernel.
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*
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* @param arg A string containing all arguments, separated by spaces.
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*/
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void
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parse_args(
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char * arg /* Arguments */
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) {
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/* Sanity check... */
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if (!arg) { return; }
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char * pch; /* Tokenizer pointer */
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char * save; /* We use the reentrant form of strtok */
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char * argv[1024]; /* Command tokens (space-separated elements) */
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int tokenid = 0; /* argc, basically */
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/* Tokenize the arguments, splitting at spaces */
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pch = strtok_r(arg," ",&save);
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if (!pch) { return; }
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while (pch != NULL) {
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argv[tokenid] = (char *)pch;
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++tokenid;
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pch = strtok_r(NULL," ",&save);
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}
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argv[tokenid] = NULL;
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/* Tokens are now stored in argv. */
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for (int i = 0; i < tokenid; ++i) {
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/* Parse each provided argument */
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char * pch_i;
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char * save_i;
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char * argp[1024];
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int argc = 0;
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pch_i = strtok_r(argv[i],"=",&save_i);
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if (!pch_i) { continue; }
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while (pch_i != NULL) {
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argp[argc] = (char *)pch_i;
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++argc;
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pch_i = strtok_r(NULL,"=",&save_i);
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}
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argp[argc] = NULL;
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if (!strcmp(argp[0],"vid")) {
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if (argc < 2) { kprintf("vid=?\n"); continue; }
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if (!strcmp(argp[1],"qemu")) {
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/* Bochs / Qemu Video Device */
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graphics_install_bochs();
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} else {
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kprintf("Unrecognized video adapter: %s\n", argp[1]);
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}
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} else if (!strcmp(argp[0],"wallpaper")) {
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if (argc < 2) { kprintf("wallpaper=?\n"); continue; }
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bochs_install_wallpaper(argp[1]);
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}
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}
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}
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