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344 lines
10 KiB
344 lines
10 KiB
package fleprocess
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/*
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Copyright © 2020 Jean-Marc Meessen, ON4KJM <on4kjm@gmail.com>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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// ValidateLat checks if value is within range of +-90 degrees inclusive.
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func ValidateLat(lat string) (ref, errorMsg string) {
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if val, err := strconv.ParseFloat(lat, 64); err == nil {
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if val <= float64(90.0) && val >= float64(-90.0) {
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return lat, ""
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}
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}
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errorMsg = "[" + lat + "] is an invalid lat"
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return "*" + lat, errorMsg
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}
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// ValidateLon checks if value is within range of +-180 degrees inclusive.
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func ValidateLon(lon string) (ref, errorMsg string) {
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if val, err := strconv.ParseFloat(lon, 64); err == nil {
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if val <= float64(180.0) && val >= float64(-180.0) {
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return lon, ""
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}
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}
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errorMsg = "[" + lon + "] is an invalid lon"
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return "*" + lon, errorMsg
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}
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// ValidateSota verifies whether the supplied string is a valid SOTA reference.
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// The syntax is: AA/NN-CCC: Association/Name-3-digit numeric Code (e.g. G/CE-001).
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func ValidateSota(inputStr string) (ref, errorMsg string) {
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inputStr = strings.ToUpper(strings.TrimSpace(inputStr))
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wrongInputStr := "*" + inputStr
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if validSotaRegexp.MatchString(inputStr) {
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return inputStr, ""
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}
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errorMsg = "[" + inputStr + "] is an invalid SOTA reference"
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return wrongInputStr, errorMsg
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}
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var validSotaRegexp = regexp.MustCompile(`^[0-9A-Z]{1,3}/[A-Z]{2}-[\d]{3}$`)
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// ValidateWwff verifies whether the supplied string is a valid WWFF reference.
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// The syntax is: AAFF-CCCC: AA = national prefix, CCCC = 4-digit numeric code (e.g. ONFF-0001).
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func ValidateWwff(inputStr string) (ref, errorMsg string) {
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inputStr = strings.ToUpper(strings.TrimSpace(inputStr))
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wrongInputStr := "*" + inputStr
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if validWwffRegexp.MatchString(inputStr) {
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return inputStr, ""
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}
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errorMsg = "[" + inputStr + "] is an invalid WWFF reference"
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return wrongInputStr, errorMsg
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}
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var validWwffRegexp = regexp.MustCompile(`^[\d]{0,1}[A-Z]{1,2}FF-[\d]{4}$`)
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// ValidatePota verifies whether the supplied string is a valid POTA reference. If valid, the error
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// message is empty.
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// The syntax is: AA-CCCCC: AA = national prefix, CCCCC = 4 or 5-digit numeric code (e.g. ON-00001).
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// The national prefix is composed of letters and digits and is of at least 1 char and at most 5 char length.
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func ValidatePota(inputStr string) (ref, errorMsg string) {
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inputStr = strings.ToUpper(strings.TrimSpace(inputStr))
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wrongInputStr := "*" + inputStr
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if validPotaRegexp.MatchString(inputStr) {
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return inputStr, ""
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}
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errorMsg = "[" + inputStr + "] is an invalid POTA reference"
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return wrongInputStr, errorMsg
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}
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var validPotaRegexp = regexp.MustCompile(`^[0-9A-Z]{1,5}-[\d]{4,5}$`)
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// ValidateGridLocator verifies that the supplied is a valid Maidenhead locator reference
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// (either in 4 or 6 position). The returned grid case is normalized (first two letters
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// in uppercase, last pair in lowercase). If the grid is not valid, the supicious string
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// is prefixed with a * and an erroMsg is genrated.
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func ValidateGridLocator(grid string) (processedGrid, errorMsg string) {
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if validGridRegexp.MatchString(grid) {
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var output strings.Builder
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for i, c := range grid {
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//The first pair of characters to be forced uppercase
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if (i == 0) || (i == 1) {
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output.WriteString(strings.ToUpper(string(c)))
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}
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//The second pair (numbers) are left alone
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if (i == 2) || (i == 3) {
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output.WriteString(string(c))
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}
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//The third pair of characters to be forced lowercase
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if (i == 4) || (i == 5) {
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output.WriteString(strings.ToLower(string(c)))
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}
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}
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return output.String(), ""
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}
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processedGrid = "*" + grid
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errorMsg = "[" + grid + "] is an invalid grid reference"
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return processedGrid, errorMsg
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}
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var validGridRegexp = regexp.MustCompile("(?i)^[a-z]{2}[0-9]{2}([a-z]{2})?$")
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var validCallRegexp = regexp.MustCompile(`[\d]{0,1}[A-Z]{1,2}\d([A-Z]{1,4}|\d{3,3}|\d{1,3}[A-Z])[A-Z]{0,5}`)
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var validPrefixRegexp = regexp.MustCompile(`\A[a-zA-Z0-9]{1,3}$`)
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// ValidateCall verifies whether the supplied string is a valid callsign.
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// prefix and suffix are not checked for validity
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// If it is not valid, the supicious string is prefixed with a * and an erroMsg is genrated.
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func ValidateCall(sign string) (call, errorMsg string) {
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sign = strings.ToUpper(strings.TrimSpace(sign))
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sp := strings.Split(sign, "/")
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wrongSign := "*" + sign
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switch len(sp) {
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case 1:
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if validCallRegexp.MatchString(sign) {
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return sign, ""
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}
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return wrongSign, "[" + sign + "] is an invalid call"
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case 2:
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// some ambiguity here we need to resolve, could be a prefix or a suffix
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if validCallRegexp.MatchString(sp[0]) {
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//Callisign with suffix (unchecked)
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return sign, ""
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}
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//else we are dealing with a prefixed Callsign
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//validate the part that should contain the call (sp[1])
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if !validCallRegexp.MatchString(sp[1]) {
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return wrongSign, "[" + sp[1] + "] is an invalid call"
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}
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//validate the prefix
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if !validPrefixRegexp.MatchString(sp[0]) {
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return wrongSign, "[" + sp[0] + "] is an invalid prefix"
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}
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return sign, ""
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case 3:
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//validate the part that should contain the call (sp[1])
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if !validCallRegexp.MatchString(sp[1]) {
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return wrongSign, "[" + sp[1] + "] is an invalid call"
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}
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//validate the prefix
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if !validPrefixRegexp.MatchString(sp[0]) {
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return wrongSign, "[" + sp[0] + "] is an invalid prefix"
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}
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//We don't check the suffix
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return sign, ""
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}
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return wrongSign, "[" + sign + "] is invalid: too many '/'"
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}
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// NormalizeDate takes what looks like a date and normalises it to "YYYY-MM-DD"
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func NormalizeDate(inputStr string) (date, errorMsg string) {
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//Try to split the string
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s := splitDateRegexp.Split(inputStr, 4)
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//we should have three and only three elements
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if i := len(s); i != 3 {
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errorMsg = fmt.Sprintf("Bad date format: found %d elements while expecting 3.", i)
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return "*" + inputStr, errorMsg
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}
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//complete the numbers if shorter than expected ("20" for the first and "0" for the two next)
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year := s[0]
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if len(year) == 2 {
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year = "20" + year
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}
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//This test is not really necessary, but rather belt and suspenders
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if len(year) != 4 {
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errorMsg = "Bad date format: first part doesn't look like a year"
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return "*" + inputStr, errorMsg
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}
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month := s[1]
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if len(month) == 1 {
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month = "0" + month
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}
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if len(month) != 2 {
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errorMsg = "Bad date format: second part doesn't look like a month"
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return "*" + inputStr, errorMsg
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}
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day := s[2]
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if len(day) == 1 {
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day = "0" + day
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}
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if len(day) != 2 {
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errorMsg = "Bad date format: third element doesn't look like a day"
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return "*" + inputStr, errorMsg
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}
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//re-assemble the string with the correct delimiter
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date = year + "-" + month + "-" + day
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return date, ""
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}
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var splitDateRegexp = regexp.MustCompile(`[-/ .]`)
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// ValidateDate verifies whether the string is a valid date (YYYY-MM-DD).
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func ValidateDate(inputStr string) (ref, errorMsg string) {
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const RFC3339FullDate = "2006-01-02"
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inputStr = strings.ToUpper(strings.TrimSpace(inputStr))
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wrongInputStr := "*" + inputStr
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_, err := time.Parse(RFC3339FullDate, inputStr)
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if err == nil {
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return inputStr, ""
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}
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return wrongInputStr, fmt.Sprint(err)
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}
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// IncrementDate will increment the supplied date by the specified increment. It returns the new date.
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func IncrementDate(date string, increment int) (newdate string, err string) {
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if date == "" {
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return "", "No date to increment"
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}
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if increment < 1 {
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return "*" + date, "Invalid day increment, expecting greater or equal to 1"
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}
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if 10 < increment {
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return "*" + date, "Invalid day increment, expecting smaller or equal to 10"
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}
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const RFC3339FullDate = "2006-01-02"
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convertedTime, timeErr := time.Parse(RFC3339FullDate, date)
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if timeErr != nil {
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return "*" + date, "(Internal error) error " + fmt.Sprint(timeErr)
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}
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// the number of days specified in increment
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newDate := convertedTime.AddDate(0, 0, increment)
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return newDate.Format(RFC3339FullDate), ""
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}
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// IsBand retuns true if the passed input string is a valid string
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func IsBand(inputStr string) (result bool, lowerLimit, upperLimit float64, altBandName string) {
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switch strings.ToLower(inputStr) {
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case "2190m":
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return true, 0.1357, 0.1378, "VLF"
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case "630m":
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return true, 0.472, 0.479, "VLF"
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case "560m":
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return true, 0.501, 0.504, "VLF"
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case "160m":
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return true, 1.8, 2.0, "1.8MHz"
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case "80m":
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return true, 3.5, 4.0, "3.5MHz"
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case "60m":
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return true, 5.06, 5.45, "5MHz"
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case "40m":
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return true, 7.0, 7.3, "7MHz"
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case "30m":
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return true, 10.1, 10.15, "10MHz"
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case "20m":
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return true, 14.0, 14.35, "14MHz"
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case "17m":
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return true, 18.068, 18.168, "18MHz"
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case "15m":
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return true, 21.0, 21.45, "21MHz"
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case "12m":
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return true, 24.890, 24.99, "24MHz"
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case "10m":
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return true, 28.0, 29.7, "28MHz"
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case "6m":
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return true, 50, 54, "50MHz"
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case "4m":
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return true, 70, 71, "70MHz"
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case "2m":
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return true, 144, 148, "144MHz"
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case "1.25m":
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return true, 222, 225, "222MHz"
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case "70cm":
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return true, 420, 450, "432MHz"
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case "33cm":
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return true, 902, 928, "900MHz"
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case "23cm":
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return true, 1240, 1300, "1240MHz"
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case "13cm":
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return true, 2300, 2450, "2.3GHz"
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case "9cm":
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return true, 3300, 3500, "3.4GHz"
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case "6cm":
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return true, 5650, 5925, "5.6GHz"
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case "3cm":
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return true, 10000, 10500, "10GHz"
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case "1.25cm":
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return true, 24000, 24250, "24GHz"
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case "6mm":
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return true, 47000, 47200, "Microwave"
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case "4mm":
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return true, 75500, 81000, "Microwave"
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case "2.5mm":
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return true, 119980, 120020, "Microwave"
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case "2mm":
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return true, 142000, 149000, "Microwave"
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case "1mm":
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return true, 241000, 250000, "Microwave"
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}
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return false, 0, 0, ""
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}
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func getDefaultReport(mode string) (modeType, defaultReport string) {
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modeType = ""
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defaultReport = ""
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switch mode {
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case "SSB", "AM", "FM":
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modeType = "PHONE"
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defaultReport = "59"
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case "CW", "RTTY", "PSK":
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modeType = "CW"
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defaultReport = "599"
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case "JT65", "JT9", "JT6M", "JT4", "JT44", "FSK441", "FT8", "ISCAT", "MSK144", "QRA64", "T10", "WSPR":
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modeType = "DIGITAL"
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defaultReport = "-10"
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}
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return modeType, defaultReport
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}
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