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This commit is contained in:
frosty
2026-03-10 02:32:51 -04:00
parent 24cec7a350
commit a11bf8bb6c
19 changed files with 1537 additions and 1284 deletions
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41
src/Infobox/Calculator.c
View File

@@ -1,9 +1,9 @@
#include "Calculator.h"
#include <ctype.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ctype.h>
static char logic_log[4096];
@@ -15,7 +15,8 @@ typedef struct {
static double parse_expression(Parser *p);
static void skip_ws(Parser *p) {
while (p->buffer[p->pos] == ' ') p->pos++;
while (p->buffer[p->pos] == ' ')
p->pos++;
}
static double parse_factor(Parser *p) {
@@ -27,7 +28,8 @@ static double parse_factor(Parser *p) {
if (p->buffer[p->pos] == '(') {
p->pos++;
double res = parse_expression(p);
if (p->buffer[p->pos] == ')') p->pos++;
if (p->buffer[p->pos] == ')')
p->pos++;
return res;
}
char *endptr;
@@ -50,7 +52,7 @@ static double parse_term(Parser *p) {
char step[256];
snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op,
right, left);
right, left);
strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1);
} else
break;
@@ -72,7 +74,7 @@ static double parse_expression(Parser *p) {
char step[256];
snprintf(step, sizeof(step), "<div>%g %c %g = <b>%g</b></div>", old, op,
right, left);
right, left);
strncat(logic_log, step, sizeof(logic_log) - strlen(logic_log) - 1);
} else
break;
@@ -82,33 +84,34 @@ static double parse_expression(Parser *p) {
double evaluate(const char *expr) {
logic_log[0] = '\0';
if (!expr || strlen(expr) == 0) return 0.0;
if (!expr || strlen(expr) == 0)
return 0.0;
Parser p = {expr, 0};
return parse_expression(&p);
}
InfoBox fetch_calc_data(char *math_input) {
InfoBox info = {NULL, NULL, NULL, NULL};
if (!math_input) return info;
if (!math_input)
return info;
double result = evaluate(math_input);
char html_output[5120];
snprintf(html_output, sizeof(html_output),
"<div class='calc-container' style='line-height: 1.6;'>"
"%s"
"<div style='margin-top: 8px; border-top: 1px solid #eee; "
"padding-top: 8px; font-size: 1.2em;'>"
"<b>%g</b>"
"</div>"
"</div>",
strlen(logic_log) > 0 ? logic_log : "<div>Constant value</div>",
result);
"<div class='calc-container' style='line-height: 1.6;'>"
"%s"
"<div style='margin-top: 8px; border-top: 1px solid #eee; "
"padding-top: 8px; font-size: 1.2em;'>"
"<b>%g</b>"
"</div>"
"</div>",
strlen(logic_log) > 0 ? logic_log : "<div>Constant value</div>",
result);
info.title = strdup("Calculation");
info.extract = strdup(html_output);
info.thumbnail_url =
strdup("/static/calculation.svg");
info.thumbnail_url = strdup("/static/calculation.svg");
info.url = strdup("#");
return info;

197
src/Infobox/Dictionary.c
View File

@@ -1,6 +1,7 @@
#include "Dictionary.h"
#include "../Proxy/Proxy.h"
#include "../Scraping/Scraping.h"
#include <ctype.h>
#include <curl/curl.h>
#include <libxml/HTMLparser.h>
#include <libxml/xpath.h>
@@ -8,42 +9,60 @@
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
static const char *PREFIXES[] = {
"what is the definition of ", "what's the definition of ",
"what is the meaning of ", "what's the meaning of ",
"what does the word ", "definition of ", "meaning of ", "def of ",
"define ", "definition ", "define:", "def ", "def:",
"what does ", "what is ", "what's ", "whats ",
"meaning ", "dictionary ", "dict ", NULL
};
static const char *PREFIXES[] = {"what is the definition of ",
"what's the definition of ",
"what is the meaning of ",
"what's the meaning of ",
"what does the word ",
"definition of ",
"meaning of ",
"def of ",
"define ",
"definition ",
"define:",
"def ",
"def:",
"what does ",
"what is ",
"what's ",
"whats ",
"meaning ",
"dictionary ",
"dict ",
NULL};
static const char *SUFFIXES[] = {
" definition", " def", " meaning", " mean", " means",
" dictionary", " dict", " define", " defined",
" definition?", " def?", " meaning?", " mean?", " means?",
" in english", " in english?", NULL
};
" definition", " def", " meaning", " mean", " means",
" dictionary", " dict", " define", " defined", " definition?",
" def?", " meaning?", " mean?", " means?", " in english",
" in english?", NULL};
static const char *SKIP_WORDS[] = {"of ", "the ", "a ", "an ", NULL};
static const char *strcasestr_impl(const char *haystack, const char *needle) {
if (!haystack || !needle || !*needle) return haystack;
if (!haystack || !needle || !*needle)
return haystack;
size_t len = strlen(needle);
for (const char *h = haystack; *h; h++) {
if (strncasecmp(h, needle, len) == 0) return h;
if (strncasecmp(h, needle, len) == 0)
return h;
}
return NULL;
}
struct MemStruct { char *memory; size_t size; };
struct MemStruct {
char *memory;
size_t size;
};
static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) {
static size_t WriteCallback(void *contents, size_t size, size_t nmemb,
void *userp) {
size_t realsize = size * nmemb;
struct MemStruct *mem = (struct MemStruct *)userp;
char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if (!ptr) return 0;
if (!ptr)
return 0;
mem->memory = ptr;
memcpy(&(mem->memory[mem->size]), contents, realsize);
mem->size += realsize;
@@ -53,40 +72,57 @@ static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *use
static char *xpath_text(xmlDocPtr doc, const char *xpath) {
xmlXPathContextPtr ctx = xmlXPathNewContext(doc);
if (!ctx) return NULL;
if (!ctx)
return NULL;
xmlXPathObjectPtr obj = xmlXPathEvalExpression((const xmlChar *)xpath, ctx);
xmlXPathFreeContext(ctx);
if (!obj || !obj->nodesetval || obj->nodesetval->nodeNr == 0) {
if (obj) xmlXPathFreeObject(obj);
if (obj)
xmlXPathFreeObject(obj);
return NULL;
}
xmlChar *content = xmlNodeGetContent(obj->nodesetval->nodeTab[0]);
char *result = content ? strdup((char *)content) : NULL;
if (content) xmlFree(content);
if (content)
xmlFree(content);
xmlXPathFreeObject(obj);
return result;
}
static char *build_html(const char *word, const char *pron, const char *pos,
const char *def, const char *ex) {
static char *build_html(const char *word, const char *pron, const char *pos,
const char *def, const char *ex) {
char html[4096];
int n = snprintf(html, sizeof(html), "<div class='dict-container' style='line-height: 1.6;'>");
if (word) n += snprintf(html + n, sizeof(html) - n,
"<div style='font-size: 1.3em; font-weight: bold; margin-bottom: 4px;'>%s</div>", word);
if (pron) n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #666; margin-bottom: 8px;'>/%s/</div>", pron);
if (pos) n += snprintf(html + n, sizeof(html) - n,
"<div style='font-style: italic; color: #888; margin-bottom: 8px;'>%s</div>", pos);
if (def) n += snprintf(html + n, sizeof(html) - n,
"<div style='margin-bottom: 8px;'>%s</div>", def);
if (ex) n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #555; font-style: italic; margin-top: 8px;'>\"%s\"</div>", ex);
int n = snprintf(html, sizeof(html),
"<div class='dict-container' style='line-height: 1.6;'>");
if (word)
n += snprintf(html + n, sizeof(html) - n,
"<div style='font-size: 1.3em; font-weight: bold; "
"margin-bottom: 4px;'>%s</div>",
word);
if (pron)
n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #666; margin-bottom: 8px;'>/%s/</div>",
pron);
if (pos)
n += snprintf(html + n, sizeof(html) - n,
"<div style='font-style: italic; color: #888; margin-bottom: "
"8px;'>%s</div>",
pos);
if (def)
n += snprintf(html + n, sizeof(html) - n,
"<div style='margin-bottom: 8px;'>%s</div>", def);
if (ex)
n += snprintf(html + n, sizeof(html) - n,
"<div style='color: #555; font-style: italic; margin-top: "
"8px;'>\"%s\"</div>",
ex);
snprintf(html + n, sizeof(html) - n, "</div>");
return strdup(html);
}
static char *extract_word(const char *query) {
if (!query) return NULL;
if (!query)
return NULL;
const char *start = query;
@@ -98,9 +134,11 @@ static char *extract_word(const char *query) {
}
}
while (*start == ' ') start++;
while (*start == ' ')
start++;
char *word = strdup(start);
if (!word) return NULL;
if (!word)
return NULL;
int changed = 1;
while (changed) {
@@ -130,29 +168,37 @@ static char *extract_word(const char *query) {
}
size_t len = strlen(word);
while (len > 0 && (word[len-1] == ' ' || word[len-1] == '?' ||
word[len-1] == '!' || word[len-1] == '.')) {
while (len > 0 && (word[len - 1] == ' ' || word[len - 1] == '?' ||
word[len - 1] == '!' || word[len - 1] == '.')) {
word[--len] = '\0';
}
if (len == 0) { free(word); return NULL; }
if (len == 0) {
free(word);
return NULL;
}
for (size_t i = 0; i < len; i++) word[i] = tolower((unsigned char)word[i]);
for (size_t i = 0; i < len; i++)
word[i] = tolower((unsigned char)word[i]);
char *space = strchr(word, ' ');
if (space) *space = '\0';
if (space)
*space = '\0';
return word;
}
int is_dictionary_query(const char *query) {
if (!query) return 0;
if (!query)
return 0;
for (int i = 0; PREFIXES[i]; i++) {
size_t len = strlen(PREFIXES[i]);
if (strncasecmp(query, PREFIXES[i], len) == 0) {
const char *after = query + len;
while (*after == ' ') after++;
if (*after != '\0') return 1;
while (*after == ' ')
after++;
if (*after != '\0')
return 1;
}
}
@@ -160,23 +206,29 @@ int is_dictionary_query(const char *query) {
const char *pos = strcasestr_impl(query, SUFFIXES[i]);
if (pos) {
const char *after = pos + strlen(SUFFIXES[i]);
while (*after == ' ' || *after == '?' || *after == '!' || *after == '.') after++;
if (*after == '\0' && pos > query && (pos - query) < 100) return 1;
while (*after == ' ' || *after == '?' || *after == '!' || *after == '.')
after++;
if (*after == '\0' && pos > query && (pos - query) < 100)
return 1;
}
}
if (strncasecmp(query, "what is ", 8) == 0 ||
strncasecmp(query, "what's ", 7) == 0 ||
strncasecmp(query, "whats ", 6) == 0) {
const char *word = query + (strncasecmp(query, "what is ", 8) == 0 ? 8 :
strncasecmp(query, "what's ", 7) == 0 ? 7 : 6);
const char *articles[] = {"the ", "your ", "my ", "his ", "her ", "their ",
"our ", "this ", "that ", "these ", "those ", "a ", "an ", NULL};
if (strncasecmp(query, "what is ", 8) == 0 ||
strncasecmp(query, "what's ", 7) == 0 ||
strncasecmp(query, "whats ", 6) == 0) {
const char *word = query + (strncasecmp(query, "what is ", 8) == 0 ? 8
: strncasecmp(query, "what's ", 7) == 0 ? 7
: 6);
const char *articles[] = {"the ", "your ", "my ", "his ", "her ",
"their ", "our ", "this ", "that ", "these ",
"those ", "a ", "an ", NULL};
for (int i = 0; articles[i]; i++) {
if (strncasecmp(word, articles[i], strlen(articles[i])) == 0) return 0;
if (strncasecmp(word, articles[i], strlen(articles[i])) == 0)
return 0;
}
const char *space = strchr(word, ' ');
if (!space || *(space + 1) == '\0' || *(space + 1) == '?') return 1;
if (!space || *(space + 1) == '\0' || *(space + 1) == '?')
return 1;
}
return 0;
@@ -184,10 +236,14 @@ int is_dictionary_query(const char *query) {
char *construct_dictionary_url(const char *query) {
char *word = extract_word(query);
if (!word) return NULL;
if (!word)
return NULL;
CURL *curl = curl_easy_init();
if (!curl) { free(word); return NULL; }
if (!curl) {
free(word);
return NULL;
}
char *escaped = curl_easy_escape(curl, word, 0);
const char *base = "https://dictionary.cambridge.org/dictionary/english/";
@@ -207,10 +263,14 @@ InfoBox fetch_dictionary_data(const char *query) {
InfoBox info = {NULL, NULL, NULL, NULL};
char *url = construct_dictionary_url(query);
if (!url) return info;
if (!url)
return info;
CURL *curl = curl_easy_init();
if (!curl) { free(url); return info; }
if (!curl) {
free(url);
return info;
}
struct MemStruct chunk = {malloc(1), 0};
curl_easy_setopt(curl, CURLOPT_URL, url);
@@ -222,10 +282,13 @@ InfoBox fetch_dictionary_data(const char *query) {
if (curl_easy_perform(curl) == CURLE_OK && chunk.size > 0) {
htmlDocPtr doc = htmlReadMemory(chunk.memory, chunk.size, url, NULL,
HTML_PARSE_RECOVER | HTML_PARSE_NOERROR | HTML_PARSE_NOWARNING);
HTML_PARSE_RECOVER | HTML_PARSE_NOERROR |
HTML_PARSE_NOWARNING);
if (doc) {
char *word = xpath_text(doc, "//span[@class='hw dhw']");
char *pron = xpath_text(doc, "//span[@class='us dpron-i']//span[@class='ipa dipa lpr-2 lpl-1']");
char *pron = xpath_text(
doc,
"//span[@class='us dpron-i']//span[@class='ipa dipa lpr-2 lpl-1']");
char *pos = xpath_text(doc, "//span[@class='pos dpos']");
char *def = xpath_text(doc, "(//div[@class='def ddef_d db'])[1]");
char *ex = xpath_text(doc, "(//span[@class='eg deg'])[1]");
@@ -237,7 +300,11 @@ InfoBox fetch_dictionary_data(const char *query) {
info.url = strdup(url);
}
free(word); free(pron); free(pos); free(def); free(ex);
free(word);
free(pron);
free(pos);
free(def);
free(ex);
xmlFreeDoc(doc);
}
}
@@ -246,4 +313,4 @@ InfoBox fetch_dictionary_data(const char *query) {
free(chunk.memory);
free(url);
return info;
}
}

2
src/Infobox/Dictionary.h
View File

@@ -7,4 +7,4 @@ InfoBox fetch_dictionary_data(const char *word);
char *construct_dictionary_url(const char *word);
int is_dictionary_query(const char *query);
#endif
#endif

633
src/Infobox/UnitConversion.c
View File

@@ -23,49 +23,73 @@ typedef struct {
} UnitDef;
static const UnitDef UNITS[] = {
{"metre", {"m", "metres", "meter", "meters"}, UNIT_LENGTH, 1.0},
{"kilometre", {"km", "kilometres", "kilometer", "kilometers"}, UNIT_LENGTH, 1000.0},
{"centimetre", {"cm", "centimetres", "centimeter", "centimeters"}, UNIT_LENGTH, 0.01},
{"millimetre", {"mm", "millimetres", "millimeter", "millimeters"}, UNIT_LENGTH, 0.001},
{"mile", {"mi", "miles"}, UNIT_LENGTH, 1609.344},
{"yard", {"yd", "yards"}, UNIT_LENGTH, 0.9144},
{"foot", {"ft", "feet", "'"}, UNIT_LENGTH, 0.3048},
{"inch", {"in", "inches", "\""}, UNIT_LENGTH, 0.0254},
{"metre", {"m", "metres", "meter", "meters"}, UNIT_LENGTH, 1.0},
{"kilometre",
{"km", "kilometres", "kilometer", "kilometers"},
UNIT_LENGTH,
1000.0},
{"centimetre",
{"cm", "centimetres", "centimeter", "centimeters"},
UNIT_LENGTH,
0.01},
{"millimetre",
{"mm", "millimetres", "millimeter", "millimeters"},
UNIT_LENGTH,
0.001},
{"mile", {"mi", "miles"}, UNIT_LENGTH, 1609.344},
{"yard", {"yd", "yards"}, UNIT_LENGTH, 0.9144},
{"foot", {"ft", "feet", "'"}, UNIT_LENGTH, 0.3048},
{"inch", {"in", "inches", "\""}, UNIT_LENGTH, 0.0254},
{"kilogram", {"kg", "kilograms", "kilo", "kilos"}, UNIT_WEIGHT, 1.0},
{"gram", {"g", "grams"}, UNIT_WEIGHT, 0.001},
{"milligram", {"mg", "milligrams"}, UNIT_WEIGHT, 0.000001},
{"pound", {"lb", "lbs", "pounds"}, UNIT_WEIGHT, 0.453592},
{"ounce", {"oz", "ounces"}, UNIT_WEIGHT, 0.0283495},
{"tonne", {"tonnes", "tons", "ton"}, UNIT_WEIGHT, 1000.0},
{"stone", {"st", "stones"}, UNIT_WEIGHT, 6.35029},
{"kilogram", {"kg", "kilograms", "kilo", "kilos"}, UNIT_WEIGHT, 1.0},
{"gram", {"g", "grams"}, UNIT_WEIGHT, 0.001},
{"milligram", {"mg", "milligrams"}, UNIT_WEIGHT, 0.000001},
{"pound", {"lb", "lbs", "pounds"}, UNIT_WEIGHT, 0.453592},
{"ounce", {"oz", "ounces"}, UNIT_WEIGHT, 0.0283495},
{"tonne", {"tonnes", "tons", "ton"}, UNIT_WEIGHT, 1000.0},
{"stone", {"st", "stones"}, UNIT_WEIGHT, 6.35029},
{"celsius", {"c", "°c", "degrees celsius", "degrees c"}, UNIT_TEMP, 1.0},
{"fahrenheit", {"f", "°f", "degrees fahrenheit", "degrees f"}, UNIT_TEMP, 1.0},
{"kelvin", {"k", "degrees kelvin", "degrees k"}, UNIT_TEMP, 1.0},
{"celsius", {"c", "°c", "degrees celsius", "degrees c"}, UNIT_TEMP, 1.0},
{"fahrenheit",
{"f", "°f", "degrees fahrenheit", "degrees f"},
UNIT_TEMP,
1.0},
{"kelvin", {"k", "degrees kelvin", "degrees k"}, UNIT_TEMP, 1.0},
{"litre", {"l", "litres", "liter", "liters"}, UNIT_VOLUME, 1.0},
{"millilitre", {"ml", "millilitres", "milliliter", "milliliters"}, UNIT_VOLUME, 0.001},
{"gallon", {"gal", "gallons"}, UNIT_VOLUME, 3.78541},
{"quart", {"qt", "quarts"}, UNIT_VOLUME, 0.946353},
{"pint", {"pt", "pints"}, UNIT_VOLUME, 0.473176},
{"cup", {"cups"}, UNIT_VOLUME, 0.236588},
{"fluid ounce", {"fl oz", "fluid ounces"}, UNIT_VOLUME, 0.0295735},
{"litre", {"l", "litres", "liter", "liters"}, UNIT_VOLUME, 1.0},
{"millilitre",
{"ml", "millilitres", "milliliter", "milliliters"},
UNIT_VOLUME,
0.001},
{"gallon", {"gal", "gallons"}, UNIT_VOLUME, 3.78541},
{"quart", {"qt", "quarts"}, UNIT_VOLUME, 0.946353},
{"pint", {"pt", "pints"}, UNIT_VOLUME, 0.473176},
{"cup", {"cups"}, UNIT_VOLUME, 0.236588},
{"fluid ounce", {"fl oz", "fluid ounces"}, UNIT_VOLUME, 0.0295735},
{"square metre", {"sqm", "sq m", "m2", "square metres"}, UNIT_AREA, 1.0},
{"square foot", {"sqft", "sq ft", "ft2", "square feet"}, UNIT_AREA, 0.092903},
{"square kilometre", {"sqkm", "sq km", "km2", "square kilometres"}, UNIT_AREA, 1000000.0},
{"square mile", {"sqmi", "sq mi", "mi2", "square miles"}, UNIT_AREA, 2589988.0},
{"acre", {"acres"}, UNIT_AREA, 4046.86},
{"hectare", {"ha", "hectares"}, UNIT_AREA, 10000.0},
{"square metre", {"sqm", "sq m", "m2", "square metres"}, UNIT_AREA, 1.0},
{"square foot",
{"sqft", "sq ft", "ft2", "square feet"},
UNIT_AREA,
0.092903},
{"square kilometre",
{"sqkm", "sq km", "km2", "square kilometres"},
UNIT_AREA,
1000000.0},
{"square mile",
{"sqmi", "sq mi", "mi2", "square miles"},
UNIT_AREA,
2589988.0},
{"acre", {"acres"}, UNIT_AREA, 4046.86},
{"hectare", {"ha", "hectares"}, UNIT_AREA, 10000.0},
{"second", {"sec", "seconds", "s"}, UNIT_TIME, 1.0},
{"minute", {"min", "minutes"}, UNIT_TIME, 60.0},
{"hour", {"hr", "hours", "h"}, UNIT_TIME, 3600.0},
{"day", {"days", "d"}, UNIT_TIME, 86400.0},
{"week", {"weeks", "wk"}, UNIT_TIME, 604800.0},
{"month", {"months", "mo"}, UNIT_TIME, 2629746.0},
{"year", {"years", "yr"}, UNIT_TIME, 31556952.0},
{"second", {"sec", "seconds", "s"}, UNIT_TIME, 1.0},
{"minute", {"min", "minutes"}, UNIT_TIME, 60.0},
{"hour", {"hr", "hours", "h"}, UNIT_TIME, 3600.0},
{"day", {"days", "d"}, UNIT_TIME, 86400.0},
{"week", {"weeks", "wk"}, UNIT_TIME, 604800.0},
{"month", {"months", "mo"}, UNIT_TIME, 2629746.0},
{"year", {"years", "yr"}, UNIT_TIME, 31556952.0},
};
static const int UNIT_COUNT = sizeof(UNITS) / sizeof(UNITS[0]);
@@ -75,70 +99,73 @@ static int is_whitespace(char c) {
}
static const UnitDef *find_unit(const char *str) {
if (!str || !*str) return NULL;
if (!str || !*str)
return NULL;
size_t len = strlen(str);
char normalized[64] = {0};
size_t j = 0;
for (size_t i = 0; i < len && j < 63; i++) {
if ((unsigned char)str[i] == 0xC2 && (unsigned char)str[i+1] == 0xB0) {
i++;
continue;
}
if (str[i] == '^' && i + 1 < len && str[i + 1] == '2') {
normalized[j++] = '2';
i++;
continue;
}
normalized[j++] = tolower((unsigned char)str[i]);
if ((unsigned char)str[i] == 0xC2 && (unsigned char)str[i + 1] == 0xB0) {
i++;
continue;
}
if (str[i] == '^' && i + 1 < len && str[i + 1] == '2') {
normalized[j++] = '2';
i++;
continue;
}
normalized[j++] = tolower((unsigned char)str[i]);
}
normalized[j] = '\0';
for (int i = 0; i < UNIT_COUNT; i++) {
if (strcmp(normalized, UNITS[i].name) == 0) return &UNITS[i];
for (int k = 0; k < 4 && UNITS[i].alias[k]; k++) {
if (strcmp(normalized, UNITS[i].alias[k]) == 0) return &UNITS[i];
}
if (strcmp(normalized, UNITS[i].name) == 0)
return &UNITS[i];
for (int k = 0; k < 4 && UNITS[i].alias[k]; k++) {
if (strcmp(normalized, UNITS[i].alias[k]) == 0)
return &UNITS[i];
}
}
return NULL;
}
int is_unit_conv_query(const char *query) {
if (!query) return 0;
if (!query)
return 0;
const char *patterns[] = {
" to ", " in ", " into ",
" = ", " equals ", " equal ",
" convert ", " conversion ",
" -> ", " → ",
NULL
};
const char *patterns[] = {" to ", " in ", " into ", " = ",
" equals ", " equal ", " convert ", " conversion ",
" -> ", " → ", NULL};
int has_pattern = 0;
for (int i = 0; patterns[i]; i++) {
if (strstr(query, patterns[i])) {
has_pattern = 1;
break;
}
if (strstr(query, patterns[i])) {
has_pattern = 1;
break;
}
}
if (!has_pattern) {
const char *last_space = strrchr(query, ' ');
if (last_space) {
const UnitDef *u = find_unit(last_space + 1);
if (u) {
const char *before = query;
while (*before && is_whitespace(*before)) before++;
const char *num_end = before;
while (*num_end &&
(isdigit(*num_end) || *num_end == '.' || *num_end == '-' ||
*num_end == '+' || *num_end == '/' || *num_end == '\'' || *num_end == '"')) {
num_end++;
const char *last_space = strrchr(query, ' ');
if (last_space) {
const UnitDef *u = find_unit(last_space + 1);
if (u) {
const char *before = query;
while (*before && is_whitespace(*before))
before++;
const char *num_end = before;
while (*num_end &&
(isdigit(*num_end) || *num_end == '.' || *num_end == '-' ||
*num_end == '+' || *num_end == '/' || *num_end == '\'' ||
*num_end == '"')) {
num_end++;
}
if (num_end > before)
has_pattern = 1;
}
}
if (num_end > before) has_pattern = 1;
}
}
}
return has_pattern;
@@ -146,65 +173,68 @@ int is_unit_conv_query(const char *query) {
static double parse_value(const char **ptr) {
const char *p = *ptr;
while (*p && is_whitespace(*p)) p++;
while (*p && is_whitespace(*p))
p++;
double value = 0.0;
int has_num = 0;
if (*p == '-' || *p == '+') p++;
if (*p == '-' || *p == '+')
p++;
while (*p >= '0' && *p <= '9') {
value = value * 10 + (*p - '0');
has_num = 1;
p++;
}
if (*p == '.') {
p++;
double frac = 0.1;
while (*p >= '0' && *p <= '9') {
value += (*p - '0') * frac;
frac *= 0.1;
value = value * 10 + (*p - '0');
has_num = 1;
p++;
}
}
if (*p == '/' && has_num) {
p++;
double denom = 0.0;
int has_denom = 0;
while (*p >= '0' && *p <= '9') {
denom = denom * 10 + (*p - '0');
has_denom = 1;
p++;
}
if (has_denom && denom > 0) {
value = value / denom;
}
}
while (*p == '\'' || *p == '"') {
double extra = 0.0;
p++;
while (*p >= '0' && *p <= '9') {
extra = extra * 10 + (*p - '0');
p++;
}
if (*p == '.') {
p++;
double frac = 0.1;
while (*p >= '0' && *p <= '9') {
extra += (*p - '0') * frac;
frac *= 0.1;
p++;
value += (*p - '0') * frac;
frac *= 0.1;
has_num = 1;
p++;
}
}
if (*p == '\'' || *p == '"') p++;
value += extra * (p[-1] == '\'' ? 0.3048 : 0.0254);
if (*p == '/' && has_num) {
p++;
double denom = 0.0;
int has_denom = 0;
while (*p >= '0' && *p <= '9') {
denom = denom * 10 + (*p - '0');
has_denom = 1;
p++;
}
if (has_denom && denom > 0) {
value = value / denom;
}
}
while (*p == '\'' || *p == '"') {
double extra = 0.0;
p++;
while (*p >= '0' && *p <= '9') {
extra = extra * 10 + (*p - '0');
p++;
}
if (*p == '.') {
p++;
double frac = 0.1;
while (*p >= '0' && *p <= '9') {
extra += (*p - '0') * frac;
frac *= 0.1;
p++;
}
}
if (*p == '\'' || *p == '"')
p++;
value += extra * (p[-1] == '\'' ? 0.3048 : 0.0254);
}
if (!has_num) {
*ptr = p;
return 0.0;
*ptr = p;
return 0.0;
}
*ptr = p;
@@ -212,10 +242,13 @@ static double parse_value(const char **ptr) {
}
static int is_separator(char c) {
return is_whitespace(c) || c == ',' || c == '.' || c == '(' || c == ')' || c == '\0';
return is_whitespace(c) || c == ',' || c == '.' || c == '(' || c == ')' ||
c == '\0';
}
static int parse_conversion_query(const char *query, double *value, const UnitDef **from_unit, const UnitDef **to_unit) {
static int parse_conversion_query(const char *query, double *value,
const UnitDef **from_unit,
const UnitDef **to_unit) {
*value = 0;
*from_unit = NULL;
*to_unit = NULL;
@@ -223,127 +256,151 @@ static int parse_conversion_query(const char *query, double *value, const UnitDe
const char *value_end = query;
*value = parse_value(&value_end);
if (value_end == query) return 0;
if (value_end == query)
return 0;
const char *p = value_end;
while (*p && is_whitespace(*p)) p++;
while (*p && is_whitespace(*p))
p++;
size_t remaining = strlen(p);
if (remaining < 2) return 0;
if (remaining < 2)
return 0;
const char *to_keywords[] = {" to ", " in ", " into ", " -> ", " → ", " = ", NULL};
const char *to_keywords[] = {" to ", " in ", " into ", " -> ",
" → ", " = ", NULL};
const char *to_pos = NULL;
size_t keyword_len = 0;
for (int i = 0; to_keywords[i]; i++) {
const char *found = strstr(p, to_keywords[i]);
if (found) {
to_pos = found + strlen(to_keywords[i]);
keyword_len = strlen(to_keywords[i]);
break;
}
const char *found = strstr(p, to_keywords[i]);
if (found) {
to_pos = found + strlen(to_keywords[i]);
keyword_len = strlen(to_keywords[i]);
break;
}
}
if (!to_pos) {
const char *last_space = strrchr(p, ' ');
if (last_space && last_space > p) {
char from_part[64] = {0};
size_t len = last_space - p;
if (len < 63) {
strncpy(from_part, p, len);
*from_unit = find_unit(from_part);
if (*from_unit) {
*to_unit = find_unit(last_space + 1);
return *to_unit ? 1 : 0;
const char *last_space = strrchr(p, ' ');
if (last_space && last_space > p) {
char from_part[64] = {0};
size_t len = last_space - p;
if (len < 63) {
strncpy(from_part, p, len);
*from_unit = find_unit(from_part);
if (*from_unit) {
*to_unit = find_unit(last_space + 1);
return *to_unit ? 1 : 0;
}
}
}
}
}
return 0;
return 0;
}
char from_part[64] = {0};
size_t from_len = to_pos - p - keyword_len;
if (from_len > 63) from_len = 63;
if (from_len > 63)
from_len = 63;
strncpy(from_part, p, from_len);
char *end_from = from_part + from_len;
while (end_from > from_part && is_whitespace(end_from[-1])) end_from--;
while (end_from > from_part && is_whitespace(end_from[-1]))
end_from--;
*end_from = '\0';
*from_unit = find_unit(from_part);
if (!*from_unit) {
char *end = from_part + strlen(from_part);
while (end > from_part) {
while (end > from_part && is_whitespace(end[-1])) end--;
if (end <= from_part) break;
char *start = end;
while (start > from_part && !is_whitespace(start[-1])) start--;
size_t word_len = end - start;
memmove(from_part + word_len + 1, from_part, start - from_part);
from_part[word_len] = ' ';
from_part[word_len + 1] = '\0';
*from_unit = find_unit(from_part);
if (*from_unit) break;
end = start;
}
char *end = from_part + strlen(from_part);
while (end > from_part) {
while (end > from_part && is_whitespace(end[-1]))
end--;
if (end <= from_part)
break;
char *start = end;
while (start > from_part && !is_whitespace(start[-1]))
start--;
size_t word_len = end - start;
memmove(from_part + word_len + 1, from_part, start - from_part);
from_part[word_len] = ' ';
from_part[word_len + 1] = '\0';
*from_unit = find_unit(from_part);
if (*from_unit)
break;
end = start;
}
}
if (!*from_unit) return 0;
if (!*from_unit)
return 0;
while (*to_pos && is_whitespace(*to_pos)) to_pos++;
while (*to_pos && is_whitespace(*to_pos))
to_pos++;
if (!*to_pos) return 0;
if (!*to_pos)
return 0;
char to_part[64] = {0};
size_t to_len = 0;
const char *tp = to_pos;
while (*tp && !is_separator(*tp) && to_len < 63) {
to_part[to_len++] = *tp++;
to_part[to_len++] = *tp++;
}
to_part[to_len] = '\0';
*to_unit = find_unit(to_part);
if (!*to_unit) {
const char *try_ptr = to_pos;
while (*try_ptr && is_whitespace(*try_ptr)) try_ptr++;
char try_buf[64] = {0};
size_t try_len = 0;
while (*try_ptr && try_len < 63) {
try_buf[try_len++] = *try_ptr++;
}
while (try_len > 0) {
*to_unit = find_unit(try_buf);
if (*to_unit) {
strcpy(to_part, try_buf);
break;
const char *try_ptr = to_pos;
while (*try_ptr && is_whitespace(*try_ptr))
try_ptr++;
char try_buf[64] = {0};
size_t try_len = 0;
while (*try_ptr && try_len < 63) {
try_buf[try_len++] = *try_ptr++;
}
while (try_len > 0) {
*to_unit = find_unit(try_buf);
if (*to_unit) {
strcpy(to_part, try_buf);
break;
}
char *last_space = strrchr(try_buf, ' ');
if (!last_space)
break;
*last_space = '\0';
try_len = strlen(try_buf);
}
char *last_space = strrchr(try_buf, ' ');
if (!last_space) break;
*last_space = '\0';
try_len = strlen(try_buf);
}
}
return *to_unit ? 1 : 0;
}
static double convert_temp(double value, const UnitDef *from, const UnitDef *to) {
static double convert_temp(double value, const UnitDef *from,
const UnitDef *to) {
double celsius = 0;
if (strcmp(from->name, "celsius") == 0) celsius = value;
else if (strcmp(from->name, "fahrenheit") == 0) celsius = (value - 32) * 5.0 / 9.0;
else if (strcmp(from->name, "kelvin") == 0) celsius = value - 273.15;
if (strcmp(from->name, "celsius") == 0)
celsius = value;
else if (strcmp(from->name, "fahrenheit") == 0)
celsius = (value - 32) * 5.0 / 9.0;
else if (strcmp(from->name, "kelvin") == 0)
celsius = value - 273.15;
if (strcmp(to->name, "celsius") == 0) return celsius;
else if (strcmp(to->name, "fahrenheit") == 0) return celsius * 9.0 / 5.0 + 32;
else if (strcmp(to->name, "kelvin") == 0) return celsius + 273.15;
if (strcmp(to->name, "celsius") == 0)
return celsius;
else if (strcmp(to->name, "fahrenheit") == 0)
return celsius * 9.0 / 5.0 + 32;
else if (strcmp(to->name, "kelvin") == 0)
return celsius + 273.15;
return 0;
}
static double convert_value(double value, const UnitDef *from, const UnitDef *to) {
if (from->type != to->type) return 0;
static double convert_value(double value, const UnitDef *from,
const UnitDef *to) {
if (from->type != to->type)
return 0;
if (from->type == UNIT_TEMP) {
return convert_temp(value, from, to);
return convert_temp(value, from, to);
}
double base_value = value * from->to_base;
@@ -351,112 +408,124 @@ static double convert_value(double value, const UnitDef *from, const UnitDef *to
}
static void format_number(double val, char *buf, size_t bufsize) {
if (bufsize == 0) return;
if (bufsize == 0)
return;
if (val == 0) {
snprintf(buf, bufsize, "0");
return;
snprintf(buf, bufsize, "0");
return;
}
if (fabs(val) < 0.01 && fabs(val) > 0) {
snprintf(buf, bufsize, "%.2g", val);
snprintf(buf, bufsize, "%.2g", val);
} else if (fabs(val) < 1) {
snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0') *p-- = '\0';
if (*p == '.') *p = '\0';
snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0')
*p-- = '\0';
if (*p == '.')
*p = '\0';
} else if (fmod(val + 0.0001, 1.0) < 0.0002) {
snprintf(buf, bufsize, "%.0f", val);
snprintf(buf, bufsize, "%.0f", val);
} else {
snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0') *p-- = '\0';
if (*p == '.') *p = '\0';
snprintf(buf, bufsize, "%.2f", val);
char *p = buf + strlen(buf) - 1;
while (p > buf && *p == '0')
*p-- = '\0';
if (*p == '.')
*p = '\0';
}
}
static const char *pluralize(const char *unit, double value, char *buf, size_t bufsize) {
static const char *pluralize(const char *unit, double value, char *buf,
size_t bufsize) {
int is_one = (fabs(value - 1.0) < 0.0001 || fabs(value + 1.0) < 0.0001);
size_t len = strlen(unit);
if (len == 0 || bufsize == 0) return unit;
if (len == 0 || bufsize == 0)
return unit;
strncpy(buf, unit, bufsize - 1);
buf[bufsize - 1] = '\0';
if (strcmp(unit, "foot") == 0 || strcmp(unit, "square foot") == 0) {
if (is_one) strcpy(buf, unit);
else strcpy(buf, strcmp(unit, "square foot") == 0 ? "square feet" : "feet");
return buf;
if (is_one)
strcpy(buf, unit);
else
strcpy(buf, strcmp(unit, "square foot") == 0 ? "square feet" : "feet");
return buf;
}
if (strcmp(unit, "inch") == 0 || strcmp(unit, "square inch") == 0) {
if (is_one) strcpy(buf, unit);
else strcpy(buf, strcmp(unit, "square inch") == 0 ? "square inches" : "inches");
return buf;
if (is_one)
strcpy(buf, unit);
else
strcpy(buf,
strcmp(unit, "square inch") == 0 ? "square inches" : "inches");
return buf;
}
if (strcmp(unit, "stone") == 0) {
if (is_one) strcpy(buf, "stone");
else strcpy(buf, "stones");
return buf;
if (is_one)
strcpy(buf, "stone");
else
strcpy(buf, "stones");
return buf;
}
if (strcmp(unit, "celsius") == 0 ||
strcmp(unit, "fahrenheit") == 0 ||
strcmp(unit, "kelvin") == 0) {
strcpy(buf, unit);
return buf;
if (strcmp(unit, "celsius") == 0 || strcmp(unit, "fahrenheit") == 0 ||
strcmp(unit, "kelvin") == 0) {
strcpy(buf, unit);
return buf;
}
if (unit[len-1] == 's' ||
unit[len-1] == 'x' ||
unit[len-1] == 'z' ||
(len >= 2 && unit[len-2] == 'c' && unit[len-1] == 'h') ||
(len >= 2 && unit[len-2] == 's' && unit[len-1] == 'h')) {
if (!is_one) {
buf[len] = 'e';
buf[len+1] = '\0';
}
} else if (unit[len-1] == 'y' && len >= 2 &&
!(unit[len-2] == 'a' || unit[len-2] == 'e' ||
unit[len-2] == 'i' || unit[len-2] == 'o' ||
unit[len-2] == 'u')) {
if (is_one) {
buf[len-1] = '\0';
if (unit[len - 1] == 's' || unit[len - 1] == 'x' || unit[len - 1] == 'z' ||
(len >= 2 && unit[len - 2] == 'c' && unit[len - 1] == 'h') ||
(len >= 2 && unit[len - 2] == 's' && unit[len - 1] == 'h')) {
if (!is_one) {
buf[len] = 'e';
buf[len + 1] = '\0';
}
} else if (unit[len - 1] == 'y' && len >= 2 &&
!(unit[len - 2] == 'a' || unit[len - 2] == 'e' ||
unit[len - 2] == 'i' || unit[len - 2] == 'o' ||
unit[len - 2] == 'u')) {
if (is_one) {
buf[len - 1] = '\0';
} else {
buf[len] = 's';
buf[len + 1] = '\0';
}
} else if (len >= 2 && unit[len - 2] == 'f' && unit[len - 1] == 'e') {
if (is_one) {
buf[len - 2] = '\0';
} else {
buf[len - 1] = 's';
buf[len] = '\0';
}
} else if (unit[len - 1] == 'f' && len >= 1) {
if (is_one) {
buf[len - 1] = '\0';
} else {
buf[len - 1] = 'v';
buf[len] = 'e';
buf[len + 1] = 's';
buf[len + 2] = '\0';
}
} else if (unit[len - 1] == 'e' && len >= 2 && unit[len - 2] == 'f') {
if (is_one) {
buf[len - 2] = '\0';
} else {
buf[len - 1] = 's';
buf[len] = '\0';
}
} else {
buf[len] = 's';
buf[len+1] = '\0';
}
} else if (len >= 2 && unit[len-2] == 'f' && unit[len-1] == 'e') {
if (is_one) {
buf[len-2] = '\0';
} else {
buf[len-1] = 's';
buf[len] = '\0';
}
} else if (unit[len-1] == 'f' && len >= 1) {
if (is_one) {
buf[len-1] = '\0';
} else {
buf[len-1] = 'v';
buf[len] = 'e';
buf[len+1] = 's';
buf[len+2] = '\0';
}
} else if (unit[len-1] == 'e' && len >= 2 && unit[len-2] == 'f') {
if (is_one) {
buf[len-2] = '\0';
} else {
buf[len-1] = 's';
buf[len] = '\0';
}
} else {
if (!is_one) {
buf[len] = 's';
buf[len+1] = '\0';
}
if (!is_one) {
buf[len] = 's';
buf[len + 1] = '\0';
}
}
return buf;
}
static char *build_html(double value, const UnitDef *from, double result, const UnitDef *to) {
static char *build_html(double value, const UnitDef *from, double result,
const UnitDef *to) {
static char html[4096];
char val_buf[64], res_buf[64], from_name_buf[64], to_name_buf[64];
format_number(value, val_buf, sizeof(val_buf));
@@ -466,30 +535,34 @@ static char *build_html(double value, const UnitDef *from, double result, const
pluralize(to->name, result, to_name_buf, sizeof(to_name_buf));
int n = snprintf(html, sizeof(html),
"<div class='unit-conv-container' style='line-height: 1.6;'>"
"<div style='font-size: 1.3em; margin-bottom: 8px;'>"
"<b>%s %s</b> = <b>%s %s</b>"
"</div>",
val_buf, from_name_buf,
res_buf, to_name_buf);
"<div class='unit-conv-container' style='line-height: 1.6;'>"
"<div style='font-size: 1.3em; margin-bottom: 8px;'>"
"<b>%s %s</b> = <b>%s %s</b>"
"</div>",
val_buf, from_name_buf, res_buf, to_name_buf);
snprintf(html + n, sizeof(html) - n, "</div>");
return html;
}
InfoBox fetch_unit_conv_data(const char *query) {
InfoBox info = {NULL, NULL, NULL, NULL};
if (!query) return info;
if (!query)
return info;
double value = 0;
const UnitDef *from = NULL;
const UnitDef *to = NULL;
if (!parse_conversion_query(query, &value, &from, &to)) return info;
if (!from || !to) return info;
if (from->type != to->type) return info;
if (!parse_conversion_query(query, &value, &from, &to))
return info;
if (!from || !to)
return info;
if (from->type != to->type)
return info;
double result = convert_value(value, from, to);
if (result == 0 && value != 0 && from->type != UNIT_TEMP) return info;
if (result == 0 && value != 0 && from->type != UNIT_TEMP)
return info;
info.title = strdup("Unit Conversion");
info.extract = strdup(build_html(value, from, result, to));

149
src/Infobox/Wikipedia.c
View File

@@ -14,41 +14,43 @@ struct WikiMemoryStruct {
};
static void shorten_summary(char **extract_ptr, int max_chars) {
if (!extract_ptr || !*extract_ptr) return;
if (!extract_ptr || !*extract_ptr)
return;
char *text = *extract_ptr;
int len = strlen(text);
if (len <= max_chars) return;
if (len <= max_chars)
return;
int end_pos = max_chars;
for (int i = max_chars; i > (max_chars / 2); i--) {
if (text[i] == '.' || text[i] == '!' || text[i] == '?') {
end_pos = i + 1;
break;
}
if (text[i] == '.' || text[i] == '!' || text[i] == '?') {
end_pos = i + 1;
break;
}
}
char *new_text = (char *)malloc(end_pos + 4);
if (new_text) {
strncpy(new_text, text, end_pos);
new_text[end_pos] = '\0';
strcat(new_text, "...");
free(*extract_ptr);
*extract_ptr = new_text;
strncpy(new_text, text, end_pos);
new_text[end_pos] = '\0';
strcat(new_text, "...");
free(*extract_ptr);
*extract_ptr = new_text;
}
}
static size_t WikiWriteMemoryCallback(void *contents, size_t size, size_t nmemb,
void *userp) {
void *userp) {
size_t realsize = size * nmemb;
struct WikiMemoryStruct *mem = (struct WikiMemoryStruct *)userp;
char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if (ptr == NULL) {
fprintf(stderr, "Not enough memory (realloc returned NULL)\n");
return 0;
fprintf(stderr, "Not enough memory (realloc returned NULL)\n");
return 0;
}
mem->memory = ptr;
@@ -63,48 +65,49 @@ static void extract_wiki_info(xmlNode *node, InfoBox *info) {
xmlNode *cur_node = NULL;
for (cur_node = node; cur_node; cur_node = cur_node->next) {
if (cur_node->type == XML_ELEMENT_NODE) {
if (strcmp((const char *)cur_node->name, "page") == 0) {
xmlChar *title = xmlGetProp(cur_node, (const xmlChar *)"title");
if (title) {
info->title = strdup((const char *)title);
if (cur_node->type == XML_ELEMENT_NODE) {
if (strcmp((const char *)cur_node->name, "page") == 0) {
xmlChar *title = xmlGetProp(cur_node, (const xmlChar *)"title");
if (title) {
info->title = strdup((const char *)title);
const char *base_article_url = "https://en.wikipedia.org/wiki/";
char *formatted_title = strdup((const char *)title);
for (int i = 0; formatted_title[i]; i++) {
if (formatted_title[i] == ' ') formatted_title[i] = '_';
const char *base_article_url = "https://en.wikipedia.org/wiki/";
char *formatted_title = strdup((const char *)title);
for (int i = 0; formatted_title[i]; i++) {
if (formatted_title[i] == ' ')
formatted_title[i] = '_';
}
info->url =
malloc(strlen(base_article_url) + strlen(formatted_title) + 1);
if (info->url) {
strcpy(info->url, base_article_url);
strcat(info->url, formatted_title);
}
free(formatted_title);
xmlFree(title);
}
}
info->url =
malloc(strlen(base_article_url) + strlen(formatted_title) + 1);
if (info->url) {
strcpy(info->url, base_article_url);
strcat(info->url, formatted_title);
if (strcmp((const char *)cur_node->name, "thumbnail") == 0) {
xmlChar *source = xmlGetProp(cur_node, (const xmlChar *)"source");
if (source) {
info->thumbnail_url = strdup((const char *)source);
xmlFree(source);
}
}
free(formatted_title);
xmlFree(title);
}
}
if (strcmp((const char *)cur_node->name, "thumbnail") == 0) {
xmlChar *source = xmlGetProp(cur_node, (const xmlChar *)"source");
if (source) {
info->thumbnail_url = strdup((const char *)source);
xmlFree(source);
}
}
if (strcmp((const char *)cur_node->name, "extract") == 0) {
xmlChar *content = xmlNodeGetContent(cur_node);
if (content) {
info->extract = strdup((const char *)content);
if (strcmp((const char *)cur_node->name, "extract") == 0) {
xmlChar *content = xmlNodeGetContent(cur_node);
if (content) {
info->extract = strdup((const char *)content);
shorten_summary(&(info->extract), 300);
xmlFree(content);
shorten_summary(&(info->extract), 300);
xmlFree(content);
}
}
}
}
}
extract_wiki_info(cur_node->children, info);
extract_wiki_info(cur_node->children, info);
}
}
@@ -120,27 +123,27 @@ InfoBox fetch_wiki_data(char *api_url) {
curl_handle = curl_easy_init();
if (curl_handle) {
curl_easy_setopt(curl_handle, CURLOPT_URL, api_url);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION,
WikiWriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
apply_proxy_settings(curl_handle);
curl_easy_setopt(curl_handle, CURLOPT_URL, api_url);
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION,
WikiWriteMemoryCallback);
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
apply_proxy_settings(curl_handle);
res = curl_easy_perform(curl_handle);
res = curl_easy_perform(curl_handle);
if (res == CURLE_OK) {
xmlDocPtr doc =
xmlReadMemory(chunk.memory, chunk.size, "noname.xml", NULL, 0);
if (doc != NULL) {
xmlNode *root_element = xmlDocGetRootElement(doc);
extract_wiki_info(root_element, &info);
xmlFreeDoc(doc);
if (res == CURLE_OK) {
xmlDocPtr doc =
xmlReadMemory(chunk.memory, chunk.size, "noname.xml", NULL, 0);
if (doc != NULL) {
xmlNode *root_element = xmlDocGetRootElement(doc);
extract_wiki_info(root_element, &info);
xmlFreeDoc(doc);
}
}
}
curl_easy_cleanup(curl_handle);
free(chunk.memory);
curl_easy_cleanup(curl_handle);
free(chunk.memory);
}
return info;
@@ -148,18 +151,18 @@ InfoBox fetch_wiki_data(char *api_url) {
char *construct_wiki_url(const char *search_term) {
CURL *curl = curl_easy_init();
if (!curl) return NULL;
if (!curl)
return NULL;
char *escaped_term = curl_easy_escape(curl, search_term, 0);
const char *base =
"https://en.wikipedia.org/w/"
"api.php?action=query&prop=extracts|pageimages&exintro&"
"explaintext&pithumbsize=400&format=xml&origin=*&titles=";
const char *base = "https://en.wikipedia.org/w/"
"api.php?action=query&prop=extracts|pageimages&exintro&"
"explaintext&pithumbsize=400&format=xml&origin=*&titles=";
char *full_url = malloc(strlen(base) + strlen(escaped_term) + 1);
if (full_url) {
strcpy(full_url, base);
strcat(full_url, escaped_term);
strcpy(full_url, base);
strcat(full_url, escaped_term);
}
curl_free(escaped_term);