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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sds/sds.h>
#include <regex.h>
#include <util.h>
struct md_syntax {
regex_t anchor;
};
struct md_syntax syntax = {
.anchor = NULL,
};
int* anchorsIndecies;
int anchorsCount = 0;
void initRendering() {
/*
* Compile regexes used in rendering
*/
herr(regcomp(&syntax.anchor, "\\[\\([^]]*\\)\\](\\([^)]*\\))", 0), "regcomp");
}
void freeRendering() {
regfree(&syntax.anchor);
free(anchorsIndecies);
}
void renderPage(const sds page) {
if (sdslen(page) == 0) {
printf("Server didn't return page!\n");
return;
}
sds toPrint = sdsdup(page);
/*
* Parse Markdown constructs
*/
/* Substitute and store anchorsIndecies */
if (anchorsIndecies != NULL) {
free(anchorsIndecies);
anchorsCount = 0;
anchorsIndecies = NULL;
}
toPrint = gsub_getm(toPrint, &syntax.anchor, "\033[4m\1\033[0m\16", &anchorsIndecies, &anchorsCount);
sds newPrint;
for (int i = 0, anchorInd = 0; i < anchorsCount; i++) {
anchorInd = strchr(toPrint, '\16') - toPrint;
/* In toPrint, replace '\16' with "\033[30;46m%d\033[0m", where %d is the variable i */
toPrint[anchorInd] = '\0';
newPrint = sdsgrowzero(sdsempty(), sdslen(toPrint) + digits(i) + 8 + 4);
sprintf(newPrint, "%s\033[30;46m%d\033[0m%s", toPrint, i, toPrint + anchorInd + 1);
sdsfree(toPrint);
toPrint = newPrint;
}
/*
* Print page on stdout
*/
write(1, toPrint, sdslen(toPrint));
sdsfree(toPrint);
}
#define MAX_LEN_COMMAND 16
#define COMMAND_FORMAT ": %16s"
int handleCLI(sds authority, sds *address, const sds page) {
// Get a line
char line[1024];
fgets(line, 1024, stdin);
// Nothing
if (line[0] == '\0') {
printf("Please enter a valid command!\n");
return 0;
}
// Number or URL
if (line[0] != ':') {
// Index of anchor
if (strchr(line, '/') == NULL) {
int gotoIndex = 0;
sscanf(line, "%d", &gotoIndex);
if (gotoIndex < 0 || gotoIndex >= anchorsCount) {
printf("Invalid anchor index!\n");
return 0;
}
char* newplace = strchr(page + anchorsIndecies[gotoIndex], '(') + 1;
sdsfree(*address);
*address = sdscatlen(sdsdup(authority), newplace, strchr(newplace, ')') - newplace);
}
// New address
else {
sdsfree(*address);
*address = sdsnewlen(line, strlen(line)-1 /* skip newline */);
}
return 0;
}
// Special command
// Get command name and it's arguments
// Currently no command takes arguments
char name[MAX_LEN_COMMAND+1] = { '\0' };
int argsAssigned = sscanf(line, COMMAND_FORMAT, name);
if (streq(name, "q") || streq(name, "e") || streq(name, "quit") || streq(name, "exit")) {
return 1;
}
printf("Invalid command %s!\n", name);
return 0;
}
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