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/*
Reader and writer for comma-separated values (`CSV`) files, per [[ RFC 4180 ; https://tools.ietf.org/html/rfc4180.html ]].
Example:
package main
import "core:fmt"
import "core:encoding/csv"
import "core:os"
// Requires keeping the entire CSV file in memory at once
iterate_csv_from_string :: proc(filename: string) {
r: csv.Reader
r.trim_leading_space = true
r.reuse_record = true // Without it you have to delete(record)
r.reuse_record_buffer = true // Without it you have to each of the fields within it
defer csv.reader_destroy(&r)
csv_data, csv_err := os.read_entire_file(filename, context.allocator)
defer delete(csv_data)
if csv_err == nil {
csv.reader_init_with_string(&r, string(csv_data))
} else {
fmt.eprintfln("Unable to open file: %v. Error: %v", filename, csv_err)
return
}
for r, i, err in csv.iterator_next(&r) {
if err != nil { /* Do something with error */ }
for f, j in r {
fmt.printfln("Record %v, field %v: %q", i, j, f)
}
}
}
// Reads the CSV as it's processed (with a small buffer)
iterate_csv_from_stream :: proc(filename: string) {
fmt.printfln("Hellope from %v", filename)
r: csv.Reader
r.trim_leading_space = true
r.reuse_record = true // Without it you have to delete(record)
r.reuse_record_buffer = true // Without it you have to delete each of the fields within it
defer csv.reader_destroy(&r)
handle, err := os.open(filename)
defer os.close(handle)
if err != nil {
fmt.eprintfln("Unable to open file: %v. Error: %v", filename, err)
return
}
csv.reader_init(&r, handle.stream)
for r, i in csv.iterator_next(&r) {
for f, j in r {
fmt.printfln("Record %v, field %v: %q", i, j, f)
}
}
fmt.printfln("Error: %v", csv.iterator_last_error(r))
}
// Read all records at once
read_csv_from_string :: proc(filename: string) {
r: csv.Reader
r.trim_leading_space = true
defer csv.reader_destroy(&r)
csv_data, csv_err := os.read_entire_file(filename, context.allocator)
defer delete(csv_data, context.allocator)
if err != nil {
fmt.eprintfln("Unable to open file: %v. Error: %v", filename, csv_err)
return
}
csv.reader_init_with_string(&r, string(csv_data))
records, err := csv.read_all(&r)
if err != nil { /* Do something with CSV parse error */ }
defer {
for record in records {
for field in record {
delete(field)
}
delete(record)
}
delete(records)
}
for r, i in records {
for f, j in r {
fmt.printfln("Record %v, field %v: %q", i, j, f)
}
}
}
*/
package encoding_csv
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