Commitae99579

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sum: Refactor algorithm selection

1 parent3b05327 commitae99579Copy full SHA for ae99579

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Lines changed: 6 additions & 8 deletions

Original file line number	Diff line number	Diff line change
`@@ -23,8 +23,6 @@ def sum_sysv(data: bytes) -> str:`
`23`	`23`	`returnf"{checksum:03}{-(len(data)//-512)}"`
`24`	`24`
`25`	`25`
`26`		`-SUM_ALGORITHMS= {"bsd":sum_bsd,"sysv":sum_sysv}`
`27`		`-`
`28`	`26`	`parser=core.ExtendedOptionParser(`
`29`	`27`	`usage="%prog [OPTION] [FILE]...",`
`30`	`28`	`)`
`@@ -33,15 +31,15 @@ def sum_sysv(data: bytes) -> str:`
`33`	`31`	`"-r",`
`34`	`32`	`dest="algorithm",`
`35`	`33`	`action="store_const",`
`36`		`-const="bsd",`
`37`		`-default="bsd",`
`38`		`-help="use the BSD (16-bit) checksum algorithm (1KiB blocks)",`
	`34`	`+const=sum_bsd,`
	`35`	`+default=sum_bsd,`
	`36`	`+help="use the BSD (16-bit) checksum algorithm (1KiB blocks) (default)",`
`39`	`37`	`)`
`40`	`38`	`parser.add_option(`
`41`	`39`	`"-s",`
`42`	`40`	`dest="algorithm",`
`43`	`41`	`action="store_const",`
`44`		`-const="sysv",`
	`42`	`+const=sum_sysv,`
`45`	`43`	`help="use the System V sum algorithm (512B blocks)",`
`46`	`44`	`)`
`47`	`45`
`@@ -52,11 +50,11 @@ def python_userland_sum(opts, args: list[str]) -> int:`
`52`	`50`
`53`	`51`	`fornameinargsor ["-"]:`
`54`	`52`	`ifname=="-":`
`55`		`-print(SUM_ALGORITHMS[opts.algorithm](sys.stdin.buffer.read()))`
	`53`	`+print(opts.algorithm(sys.stdin.buffer.read()))`
`56`	`54`	`else:`
`57`	`55`	`try:`
`58`	`56`	`withopen(name,"rb")asf:`
`59`		`-print(f"{SUM_ALGORITHMS[opts.algorithm](f.read())}{name}")`
	`57`	`+print(f"{opts.algorithm(f.read())}{name}")`
`60`	`58`	`exceptOSErrorase:`
`61`	`59`	`failed=True`
`62`	`60`	`core.perror(e)`

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